87872840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{4871}}^1$

素因数の和:4934

約数の個数: 64

約数和(自身を含む): 220993920

約数和(自身を除く): 133121080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 44, 55, 82, 88, 110, 164, 205, 220, 328, 410, 440, 451, 820, 902, 1640, 1804, 2255, 3608, 4510, 4871, 9020, 9742, 18040, 19484, 24355, 38968, 48710, 53581, 97420, 107162, 194840, 199711, 214324, 267905, 399422, 428648, 535810, 798844, 998555, 1071620, 1597688, 1997110, 2143240, 2196821, 3994220, 4393642, 7988440, 8787284, 10984105, 17574568, 21968210, 43936420, 87872840]

約数ペア:

[(1, 87872840), (2, 43936420), (4, 21968210), (5, 17574568), (8, 10984105), (10, 8787284), (11, 7988440), (20, 4393642), (22, 3994220), (40, 2196821), (41, 2143240), (44, 1997110), (55, 1597688), (82, 1071620), (88, 998555), (110, 798844), (164, 535810), (205, 428648), (220, 399422), (328, 267905), (410, 214324), (440, 199711), (451, 194840), (820, 107162), (902, 97420), (1640, 53581), (1804, 48710), (2255, 38968), (3608, 24355), (4510, 19484), (4871, 18040), (9020, 9742)]