81398720

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1151}}^1$

素因数の和:1198

約数の個数: 112

約数和(自身を含む): 221211648

約数和(自身を除く): 139812928

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 64, 65, 68, 80, 85, 104, 130, 136, 160, 170, 208, 221, 260, 272, 320, 340, 416, 442, 520, 544, 680, 832, 884, 1040, 1088, 1105, 1151, 1360, 1768, 2080, 2210, 2302, 2720, 3536, 4160, 4420, 4604, 5440, 5755, 7072, 8840, 9208, 11510, 14144, 14963, 17680, 18416, 19567, 23020, 29926, 35360, 36832, 39134, 46040, 59852, 70720, 73664, 74815, 78268, 92080, 97835, 119704, 149630, 156536, 184160, 195670, 239408, 254371, 299260, 313072, 368320, 391340, 478816, 508742, 598520, 626144, 782680, 957632, 1017484, 1197040, 1252288, 1271855, 1565360, 2034968, 2394080, 2543710, 3130720, 4069936, 4788160, 5087420, 6261440, 8139872, 10174840, 16279744, 20349680, 40699360, 81398720]

約数ペア:

[(1, 81398720), (2, 40699360), (4, 20349680), (5, 16279744), (8, 10174840), (10, 8139872), (13, 6261440), (16, 5087420), (17, 4788160), (20, 4069936), (26, 3130720), (32, 2543710), (34, 2394080), (40, 2034968), (52, 1565360), (64, 1271855), (65, 1252288), (68, 1197040), (80, 1017484), (85, 957632), (104, 782680), (130, 626144), (136, 598520), (160, 508742), (170, 478816), (208, 391340), (221, 368320), (260, 313072), (272, 299260), (320, 254371), (340, 239408), (416, 195670), (442, 184160), (520, 156536), (544, 149630), (680, 119704), (832, 97835), (884, 92080), (1040, 78268), (1088, 74815), (1105, 73664), (1151, 70720), (1360, 59852), (1768, 46040), (2080, 39134), (2210, 36832), (2302, 35360), (2720, 29926), (3536, 23020), (4160, 19567), (4420, 18416), (4604, 17680), (5440, 14963), (5755, 14144), (7072, 11510), (8840, 9208)]