21685804

素因数分解:

$2^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{13127}}^1$

素因数の和:13197

約数の個数: 24

約数和(自身を含む): 44110080

約数和(自身を除く): 22424276

約数列:

[1, 2, 4, 7, 14, 28, 59, 118, 236, 413, 826, 1652, 13127, 26254, 52508, 91889, 183778, 367556, 774493, 1548986, 3097972, 5421451, 10842902, 21685804]

約数ペア:

[(1, 21685804), (2, 10842902), (4, 5421451), (7, 3097972), (14, 1548986), (28, 774493), (59, 367556), (118, 183778), (236, 91889), (413, 52508), (826, 26254), (1652, 13127)]