21104252

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{3793}}^1$

素因数の和:3917

約数の個数: 24

約数和(自身を含む): 40155696

約数和(自身を除く): 19051444

約数列:

[1, 2, 4, 13, 26, 52, 107, 214, 428, 1391, 2782, 3793, 5564, 7586, 15172, 49309, 98618, 197236, 405851, 811702, 1623404, 5276063, 10552126, 21104252]

約数ペア:

[(1, 21104252), (2, 10552126), (4, 5276063), (13, 1623404), (26, 811702), (52, 405851), (107, 197236), (214, 98618), (428, 49309), (1391, 15172), (2782, 7586), (3793, 5564)]