8659640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19681}}^1$

素因数の和:19703

約数の個数: 32

約数和(自身を含む): 21256560

約数和(自身を除く): 12596920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 19681, 39362, 78724, 98405, 157448, 196810, 216491, 393620, 432982, 787240, 865964, 1082455, 1731928, 2164910, 4329820, 8659640]

約数ペア:

[(1, 8659640), (2, 4329820), (4, 2164910), (5, 1731928), (8, 1082455), (10, 865964), (11, 787240), (20, 432982), (22, 393620), (40, 216491), (44, 196810), (55, 157448), (88, 98405), (110, 78724), (220, 39362), (440, 19681)]