20955480

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1$

素因数の和:154

約数の個数: 256

約数和(自身を含む): 82252800

約数和(自身を除く): 61297320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 19, 20, 21, 24, 26, 28, 30, 35, 38, 39, 40, 42, 52, 56, 57, 60, 65, 70, 76, 78, 84, 91, 95, 101, 104, 105, 114, 120, 130, 133, 140, 152, 156, 168, 182, 190, 195, 202, 210, 228, 247, 260, 266, 273, 280, 285, 303, 312, 364, 380, 390, 399, 404, 420, 455, 456, 494, 505, 520, 532, 546, 570, 606, 665, 707, 728, 741, 760, 780, 798, 808, 840, 910, 988, 1010, 1064, 1092, 1140, 1212, 1235, 1313, 1330, 1365, 1414, 1482, 1515, 1560, 1596, 1729, 1820, 1919, 1976, 1995, 2020, 2121, 2184, 2280, 2424, 2470, 2626, 2660, 2730, 2828, 2964, 3030, 3192, 3458, 3535, 3640, 3705, 3838, 3939, 3990, 4040, 4242, 4940, 5187, 5252, 5320, 5460, 5656, 5757, 5928, 6060, 6565, 6916, 7070, 7410, 7676, 7878, 7980, 8484, 8645, 9191, 9595, 9880, 10374, 10504, 10605, 10920, 11514, 12120, 13130, 13433, 13832, 14140, 14820, 15352, 15756, 15960, 16968, 17290, 18382, 19190, 19695, 20748, 21210, 23028, 24947, 25935, 26260, 26866, 27573, 28280, 28785, 29640, 31512, 34580, 36764, 38380, 39390, 40299, 41496, 42420, 45955, 46056, 49894, 51870, 52520, 53732, 55146, 57570, 67165, 69160, 73528, 74841, 76760, 78780, 80598, 84840, 91910, 99788, 103740, 107464, 110292, 115140, 124735, 134330, 137865, 149682, 157560, 161196, 174629, 183820, 199576, 201495, 207480, 220584, 230280, 249470, 268660, 275730, 299364, 322392, 349258, 367640, 374205, 402990, 498940, 523887, 537320, 551460, 598728, 698516, 748410, 805980, 873145, 997880, 1047774, 1102920, 1397032, 1496820, 1611960, 1746290, 2095548, 2619435, 2993640, 3492580, 4191096, 5238870, 6985160, 10477740, 20955480]

約数ペア:

[(1, 20955480), (2, 10477740), (3, 6985160), (4, 5238870), (5, 4191096), (6, 3492580), (7, 2993640), (8, 2619435), (10, 2095548), (12, 1746290), (13, 1611960), (14, 1496820), (15, 1397032), (19, 1102920), (20, 1047774), (21, 997880), (24, 873145), (26, 805980), (28, 748410), (30, 698516), (35, 598728), (38, 551460), (39, 537320), (40, 523887), (42, 498940), (52, 402990), (56, 374205), (57, 367640), (60, 349258), (65, 322392), (70, 299364), (76, 275730), (78, 268660), (84, 249470), (91, 230280), (95, 220584), (101, 207480), (104, 201495), (105, 199576), (114, 183820), (120, 174629), (130, 161196), (133, 157560), (140, 149682), (152, 137865), (156, 134330), (168, 124735), (182, 115140), (190, 110292), (195, 107464), (202, 103740), (210, 99788), (228, 91910), (247, 84840), (260, 80598), (266, 78780), (273, 76760), (280, 74841), (285, 73528), (303, 69160), (312, 67165), (364, 57570), (380, 55146), (390, 53732), (399, 52520), (404, 51870), (420, 49894), (455, 46056), (456, 45955), (494, 42420), (505, 41496), (520, 40299), (532, 39390), (546, 38380), (570, 36764), (606, 34580), (665, 31512), (707, 29640), (728, 28785), (741, 28280), (760, 27573), (780, 26866), (798, 26260), (808, 25935), (840, 24947), (910, 23028), (988, 21210), (1010, 20748), (1064, 19695), (1092, 19190), (1140, 18382), (1212, 17290), (1235, 16968), (1313, 15960), (1330, 15756), (1365, 15352), (1414, 14820), (1482, 14140), (1515, 13832), (1560, 13433), (1596, 13130), (1729, 12120), (1820, 11514), (1919, 10920), (1976, 10605), (1995, 10504), (2020, 10374), (2121, 9880), (2184, 9595), (2280, 9191), (2424, 8645), (2470, 8484), (2626, 7980), (2660, 7878), (2730, 7676), (2828, 7410), (2964, 7070), (3030, 6916), (3192, 6565), (3458, 6060), (3535, 5928), (3640, 5757), (3705, 5656), (3838, 5460), (3939, 5320), (3990, 5252), (4040, 5187), (4242, 4940)]