81747120

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1$

素因数の和:252

約数の個数: 320

約数和(自身を含む): 329978880

約数和(自身を除く): 248231760

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 19, 20, 21, 24, 26, 28, 30, 35, 38, 39, 40, 42, 48, 52, 56, 57, 60, 65, 70, 76, 78, 80, 84, 91, 95, 104, 105, 112, 114, 120, 130, 133, 140, 152, 156, 168, 182, 190, 195, 197, 208, 210, 228, 240, 247, 260, 266, 273, 280, 285, 304, 312, 336, 364, 380, 390, 394, 399, 420, 455, 456, 494, 520, 532, 546, 560, 570, 591, 624, 665, 728, 741, 760, 780, 788, 798, 840, 910, 912, 985, 988, 1040, 1064, 1092, 1140, 1182, 1235, 1330, 1365, 1379, 1456, 1482, 1520, 1560, 1576, 1596, 1680, 1729, 1820, 1970, 1976, 1995, 2128, 2184, 2280, 2364, 2470, 2561, 2660, 2730, 2758, 2955, 2964, 3120, 3152, 3192, 3458, 3640, 3705, 3743, 3940, 3952, 3990, 4137, 4368, 4560, 4728, 4940, 5122, 5187, 5320, 5460, 5516, 5910, 5928, 6384, 6895, 6916, 7280, 7410, 7486, 7683, 7880, 7980, 8274, 8645, 9456, 9880, 10244, 10374, 10640, 10920, 11032, 11229, 11820, 11856, 12805, 13790, 13832, 14820, 14972, 15366, 15760, 15960, 16548, 17290, 17927, 18715, 19760, 20488, 20685, 20748, 21840, 22064, 22458, 23640, 25610, 25935, 26201, 27580, 27664, 29640, 29944, 30732, 31920, 33096, 34580, 35854, 37430, 38415, 40976, 41370, 41496, 44916, 47280, 48659, 51220, 51870, 52402, 53781, 55160, 56145, 59280, 59888, 61464, 66192, 69160, 71708, 74860, 76830, 78603, 82740, 82992, 89635, 89832, 97318, 102440, 103740, 104804, 107562, 110320, 112290, 122928, 131005, 138320, 143416, 145977, 149720, 153660, 157206, 165480, 179270, 179664, 194636, 204880, 207480, 209608, 215124, 224580, 243295, 262010, 268905, 286832, 291954, 299440, 307320, 314412, 330960, 340613, 358540, 389272, 393015, 414960, 419216, 430248, 449160, 486590, 524020, 537810, 583908, 614640, 628824, 681226, 717080, 729885, 778544, 786030, 860496, 898320, 973180, 1021839, 1048040, 1075620, 1167816, 1257648, 1362452, 1434160, 1459770, 1572060, 1703065, 1946360, 2043678, 2096080, 2151240, 2335632, 2724904, 2919540, 3144120, 3406130, 3892720, 4087356, 4302480, 5109195, 5449808, 5839080, 6288240, 6812260, 8174712, 10218390, 11678160, 13624520, 16349424, 20436780, 27249040, 40873560, 81747120]

約数ペア:

[(1, 81747120), (2, 40873560), (3, 27249040), (4, 20436780), (5, 16349424), (6, 13624520), (7, 11678160), (8, 10218390), (10, 8174712), (12, 6812260), (13, 6288240), (14, 5839080), (15, 5449808), (16, 5109195), (19, 4302480), (20, 4087356), (21, 3892720), (24, 3406130), (26, 3144120), (28, 2919540), (30, 2724904), (35, 2335632), (38, 2151240), (39, 2096080), (40, 2043678), (42, 1946360), (48, 1703065), (52, 1572060), (56, 1459770), (57, 1434160), (60, 1362452), (65, 1257648), (70, 1167816), (76, 1075620), (78, 1048040), (80, 1021839), (84, 973180), (91, 898320), (95, 860496), (104, 786030), (105, 778544), (112, 729885), (114, 717080), (120, 681226), (130, 628824), (133, 614640), (140, 583908), (152, 537810), (156, 524020), (168, 486590), (182, 449160), (190, 430248), (195, 419216), (197, 414960), (208, 393015), (210, 389272), (228, 358540), (240, 340613), (247, 330960), (260, 314412), (266, 307320), (273, 299440), (280, 291954), (285, 286832), (304, 268905), (312, 262010), (336, 243295), (364, 224580), (380, 215124), (390, 209608), (394, 207480), (399, 204880), (420, 194636), (455, 179664), (456, 179270), (494, 165480), (520, 157206), (532, 153660), (546, 149720), (560, 145977), (570, 143416), (591, 138320), (624, 131005), (665, 122928), (728, 112290), (741, 110320), (760, 107562), (780, 104804), (788, 103740), (798, 102440), (840, 97318), (910, 89832), (912, 89635), (985, 82992), (988, 82740), (1040, 78603), (1064, 76830), (1092, 74860), (1140, 71708), (1182, 69160), (1235, 66192), (1330, 61464), (1365, 59888), (1379, 59280), (1456, 56145), (1482, 55160), (1520, 53781), (1560, 52402), (1576, 51870), (1596, 51220), (1680, 48659), (1729, 47280), (1820, 44916), (1970, 41496), (1976, 41370), (1995, 40976), (2128, 38415), (2184, 37430), (2280, 35854), (2364, 34580), (2470, 33096), (2561, 31920), (2660, 30732), (2730, 29944), (2758, 29640), (2955, 27664), (2964, 27580), (3120, 26201), (3152, 25935), (3192, 25610), (3458, 23640), (3640, 22458), (3705, 22064), (3743, 21840), (3940, 20748), (3952, 20685), (3990, 20488), (4137, 19760), (4368, 18715), (4560, 17927), (4728, 17290), (4940, 16548), (5122, 15960), (5187, 15760), (5320, 15366), (5460, 14972), (5516, 14820), (5910, 13832), (5928, 13790), (6384, 12805), (6895, 11856), (6916, 11820), (7280, 11229), (7410, 11032), (7486, 10920), (7683, 10640), (7880, 10374), (7980, 10244), (8274, 9880), (8645, 9456)]