31555240

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{271}}^1$

素因数の和:394

約数の個数: 64

約数和(自身を含む): 74027520

約数和(自身を除く): 42472280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 71, 82, 142, 164, 205, 271, 284, 328, 355, 410, 542, 568, 710, 820, 1084, 1355, 1420, 1640, 2168, 2710, 2840, 2911, 5420, 5822, 10840, 11111, 11644, 14555, 19241, 22222, 23288, 29110, 38482, 44444, 55555, 58220, 76964, 88888, 96205, 111110, 116440, 153928, 192410, 222220, 384820, 444440, 769640, 788881, 1577762, 3155524, 3944405, 6311048, 7888810, 15777620, 31555240]

約数ペア:

[(1, 31555240), (2, 15777620), (4, 7888810), (5, 6311048), (8, 3944405), (10, 3155524), (20, 1577762), (40, 788881), (41, 769640), (71, 444440), (82, 384820), (142, 222220), (164, 192410), (205, 153928), (271, 116440), (284, 111110), (328, 96205), (355, 88888), (410, 76964), (542, 58220), (568, 55555), (710, 44444), (820, 38482), (1084, 29110), (1355, 23288), (1420, 22222), (1640, 19241), (2168, 14555), (2710, 11644), (2840, 11111), (2911, 10840), (5420, 5822)]