81961556

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{70901}}^1$

素因数の和:70939

約数の個数: 18

約数和(自身を含む): 152368398

約数和(自身を除く): 70406842

約数列:

[1, 2, 4, 17, 34, 68, 289, 578, 1156, 70901, 141802, 283604, 1205317, 2410634, 4821268, 20490389, 40980778, 81961556]

約数ペア:

[(1, 81961556), (2, 40980778), (4, 20490389), (17, 4821268), (34, 2410634), (68, 1205317), (289, 283604), (578, 141802), (1156, 70901)]