21885272

素因数分解:

$2^3\times {\mathrm{139}}^1\times {\mathrm{19681}}^1$

素因数の和:19826

約数の個数: 16

約数和(自身を含む): 41332200

約数和(自身を除く): 19446928

約数列:

[1, 2, 4, 8, 139, 278, 556, 1112, 19681, 39362, 78724, 157448, 2735659, 5471318, 10942636, 21885272]

約数ペア:

[(1, 21885272), (2, 10942636), (4, 5471318), (8, 2735659), (139, 157448), (278, 78724), (556, 39362), (1112, 19681)]