128771580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{3881}}^1$

素因数の和:3979

約数の個数: 96

約数和(自身を含む): 417392640

約数和(自身を除く): 288621060

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 79, 84, 105, 140, 158, 210, 237, 316, 395, 420, 474, 553, 790, 948, 1106, 1185, 1580, 1659, 2212, 2370, 2765, 3318, 3881, 4740, 5530, 6636, 7762, 8295, 11060, 11643, 15524, 16590, 19405, 23286, 27167, 33180, 38810, 46572, 54334, 58215, 77620, 81501, 108668, 116430, 135835, 163002, 232860, 271670, 306599, 326004, 407505, 543340, 613198, 815010, 919797, 1226396, 1532995, 1630020, 1839594, 2146193, 3065990, 3679188, 4292386, 4598985, 6131980, 6438579, 8584772, 9197970, 10730965, 12877158, 18395940, 21461930, 25754316, 32192895, 42923860, 64385790, 128771580]

約数ペア:

[(1, 128771580), (2, 64385790), (3, 42923860), (4, 32192895), (5, 25754316), (6, 21461930), (7, 18395940), (10, 12877158), (12, 10730965), (14, 9197970), (15, 8584772), (20, 6438579), (21, 6131980), (28, 4598985), (30, 4292386), (35, 3679188), (42, 3065990), (60, 2146193), (70, 1839594), (79, 1630020), (84, 1532995), (105, 1226396), (140, 919797), (158, 815010), (210, 613198), (237, 543340), (316, 407505), (395, 326004), (420, 306599), (474, 271670), (553, 232860), (790, 163002), (948, 135835), (1106, 116430), (1185, 108668), (1580, 81501), (1659, 77620), (2212, 58215), (2370, 54334), (2765, 46572), (3318, 38810), (3881, 33180), (4740, 27167), (5530, 23286), (6636, 19405), (7762, 16590), (8295, 15524), (11060, 11643)]