21710468

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{417509}}^1$

素因数の和:417526

約数の個数: 12

約数和(自身を含む): 40915980

約数和(自身を除く): 19205512

約数列:

[1, 2, 4, 13, 26, 52, 417509, 835018, 1670036, 5427617, 10855234, 21710468]

約数ペア:

[(1, 21710468), (2, 10855234), (4, 5427617), (13, 1670036), (26, 835018), (52, 417509)]