21515564

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{26497}}^1$

素因数の和:26537

約数の個数: 24

約数和(自身を含む): 44516640

約数和(自身を除く): 23001076

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 406, 812, 26497, 52994, 105988, 185479, 370958, 741916, 768413, 1536826, 3073652, 5378891, 10757782, 21515564]

約数ペア:

[(1, 21515564), (2, 10757782), (4, 5378891), (7, 3073652), (14, 1536826), (28, 768413), (29, 741916), (58, 370958), (116, 185479), (203, 105988), (406, 52994), (812, 26497)]