28756240

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{3181}}^1$

素因数の和:3307

約数の個数: 40

約数和(自身を含む): 67471128

約数和(自身を除く): 38714888

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 2260, 3181, 4520, 6362, 9040, 12724, 15905, 25448, 31810, 50896, 63620, 127240, 254480, 359453, 718906, 1437812, 1797265, 2875624, 3594530, 5751248, 7189060, 14378120, 28756240]

約数ペア:

[(1, 28756240), (2, 14378120), (4, 7189060), (5, 5751248), (8, 3594530), (10, 2875624), (16, 1797265), (20, 1437812), (40, 718906), (80, 359453), (113, 254480), (226, 127240), (452, 63620), (565, 50896), (904, 31810), (1130, 25448), (1808, 15905), (2260, 12724), (3181, 9040), (4520, 6362)]