20436780

素因数分解:

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

素因数の和:248

約数の個数: 192

約数和(自身を含む): 74511360

約数和(自身を除く): 54074580

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 19, 20, 21, 26, 28, 30, 35, 38, 39, 42, 52, 57, 60, 65, 70, 76, 78, 84, 91, 95, 105, 114, 130, 133, 140, 156, 182, 190, 195, 197, 210, 228, 247, 260, 266, 273, 285, 364, 380, 390, 394, 399, 420, 455, 494, 532, 546, 570, 591, 665, 741, 780, 788, 798, 910, 985, 988, 1092, 1140, 1182, 1235, 1330, 1365, 1379, 1482, 1596, 1729, 1820, 1970, 1995, 2364, 2470, 2561, 2660, 2730, 2758, 2955, 2964, 3458, 3705, 3743, 3940, 3990, 4137, 4940, 5122, 5187, 5460, 5516, 5910, 6895, 6916, 7410, 7486, 7683, 7980, 8274, 8645, 10244, 10374, 11229, 11820, 12805, 13790, 14820, 14972, 15366, 16548, 17290, 17927, 18715, 20685, 20748, 22458, 25610, 25935, 26201, 27580, 30732, 34580, 35854, 37430, 38415, 41370, 44916, 48659, 51220, 51870, 52402, 53781, 56145, 71708, 74860, 76830, 78603, 82740, 89635, 97318, 103740, 104804, 107562, 112290, 131005, 145977, 153660, 157206, 179270, 194636, 215124, 224580, 243295, 262010, 268905, 291954, 314412, 340613, 358540, 393015, 486590, 524020, 537810, 583908, 681226, 729885, 786030, 973180, 1021839, 1075620, 1362452, 1459770, 1572060, 1703065, 2043678, 2919540, 3406130, 4087356, 5109195, 6812260, 10218390, 20436780]

約数ペア:

[(1, 20436780), (2, 10218390), (3, 6812260), (4, 5109195), (5, 4087356), (6, 3406130), (7, 2919540), (10, 2043678), (12, 1703065), (13, 1572060), (14, 1459770), (15, 1362452), (19, 1075620), (20, 1021839), (21, 973180), (26, 786030), (28, 729885), (30, 681226), (35, 583908), (38, 537810), (39, 524020), (42, 486590), (52, 393015), (57, 358540), (60, 340613), (65, 314412), (70, 291954), (76, 268905), (78, 262010), (84, 243295), (91, 224580), (95, 215124), (105, 194636), (114, 179270), (130, 157206), (133, 153660), (140, 145977), (156, 131005), (182, 112290), (190, 107562), (195, 104804), (197, 103740), (210, 97318), (228, 89635), (247, 82740), (260, 78603), (266, 76830), (273, 74860), (285, 71708), (364, 56145), (380, 53781), (390, 52402), (394, 51870), (399, 51220), (420, 48659), (455, 44916), (494, 41370), (532, 38415), (546, 37430), (570, 35854), (591, 34580), (665, 30732), (741, 27580), (780, 26201), (788, 25935), (798, 25610), (910, 22458), (985, 20748), (988, 20685), (1092, 18715), (1140, 17927), (1182, 17290), (1235, 16548), (1330, 15366), (1365, 14972), (1379, 14820), (1482, 13790), (1596, 12805), (1729, 11820), (1820, 11229), (1970, 10374), (1995, 10244), (2364, 8645), (2470, 8274), (2561, 7980), (2660, 7683), (2730, 7486), (2758, 7410), (2955, 6916), (2964, 6895), (3458, 5910), (3705, 5516), (3743, 5460), (3940, 5187), (3990, 5122), (4137, 4940)]