21831212

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{419831}}^1$

素因数の和:419848

約数の個数: 12

約数和(自身を含む): 41143536

約数和(自身を除く): 19312324

約数列:

[1, 2, 4, 13, 26, 52, 419831, 839662, 1679324, 5457803, 10915606, 21831212]

約数ペア:

[(1, 21831212), (2, 10915606), (4, 5457803), (13, 1679324), (26, 839662), (52, 419831)]