81666056

素因数分解:

$2^3\times {\mathrm{401}}^1\times {\mathrm{25457}}^1$

素因数の和:25864

約数の個数: 16

約数和(自身を含む): 153511740

約数和(自身を除く): 71845684

約数列:

[1, 2, 4, 8, 401, 802, 1604, 3208, 25457, 50914, 101828, 203656, 10208257, 20416514, 40833028, 81666056]

約数ペア:

[(1, 81666056), (2, 40833028), (4, 20416514), (8, 10208257), (401, 203656), (802, 101828), (1604, 50914), (3208, 25457)]