20155408

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{127}}^1$

素因数の和:264

約数の個数: 80

約数和(自身を含む): 48885760

約数和(自身を除く): 28730352

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 109, 112, 127, 182, 208, 218, 254, 364, 436, 508, 728, 763, 872, 889, 1016, 1417, 1456, 1526, 1651, 1744, 1778, 2032, 2834, 3052, 3302, 3556, 5668, 6104, 6604, 7112, 9919, 11336, 11557, 12208, 13208, 13843, 14224, 19838, 22672, 23114, 26416, 27686, 39676, 46228, 55372, 79352, 92456, 96901, 110744, 158704, 179959, 184912, 193802, 221488, 359918, 387604, 719836, 775208, 1259713, 1439672, 1550416, 2519426, 2879344, 5038852, 10077704, 20155408]

約数ペア:

[(1, 20155408), (2, 10077704), (4, 5038852), (7, 2879344), (8, 2519426), (13, 1550416), (14, 1439672), (16, 1259713), (26, 775208), (28, 719836), (52, 387604), (56, 359918), (91, 221488), (104, 193802), (109, 184912), (112, 179959), (127, 158704), (182, 110744), (208, 96901), (218, 92456), (254, 79352), (364, 55372), (436, 46228), (508, 39676), (728, 27686), (763, 26416), (872, 23114), (889, 22672), (1016, 19838), (1417, 14224), (1456, 13843), (1526, 13208), (1651, 12208), (1744, 11557), (1778, 11336), (2032, 9919), (2834, 7112), (3052, 6604), (3302, 6104), (3556, 5668)]