28503640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{64781}}^1$

素因数の和:64803

約数の個数: 32

約数和(自身を含む): 69964560

約数和(自身を除く): 41460920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 64781, 129562, 259124, 323905, 518248, 647810, 712591, 1295620, 1425182, 2591240, 2850364, 3562955, 5700728, 7125910, 14251820, 28503640]

約数ペア:

[(1, 28503640), (2, 14251820), (4, 7125910), (5, 5700728), (8, 3562955), (10, 2850364), (11, 2591240), (20, 1425182), (22, 1295620), (40, 712591), (44, 647810), (55, 518248), (88, 323905), (110, 259124), (220, 129562), (440, 64781)]