28375280

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^2\times {\mathrm{211}}^1$

素因数の和:306

約数の個数: 60

約数和(自身を含む): 67941336

約数和(自身を除く): 39566056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 211, 328, 410, 422, 656, 820, 844, 1055, 1640, 1681, 1688, 2110, 3280, 3362, 3376, 4220, 6724, 8405, 8440, 8651, 13448, 16810, 16880, 17302, 26896, 33620, 34604, 43255, 67240, 69208, 86510, 134480, 138416, 173020, 346040, 354691, 692080, 709382, 1418764, 1773455, 2837528, 3546910, 5675056, 7093820, 14187640, 28375280]

約数ペア:

[(1, 28375280), (2, 14187640), (4, 7093820), (5, 5675056), (8, 3546910), (10, 2837528), (16, 1773455), (20, 1418764), (40, 709382), (41, 692080), (80, 354691), (82, 346040), (164, 173020), (205, 138416), (211, 134480), (328, 86510), (410, 69208), (422, 67240), (656, 43255), (820, 34604), (844, 33620), (1055, 26896), (1640, 17302), (1681, 16880), (1688, 16810), (2110, 13448), (3280, 8651), (3362, 8440), (3376, 8405), (4220, 6724)]