21905631

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{409}}^1\times {\mathrm{541}}^1$

素因数の和:967

約数の個数: 24

約数和(自身を含む): 34666320

約数和(自身を除く): 12760689

約数列:

[1, 3, 9, 11, 33, 99, 409, 541, 1227, 1623, 3681, 4499, 4869, 5951, 13497, 17853, 40491, 53559, 221269, 663807, 1991421, 2433959, 7301877, 21905631]

約数ペア:

[(1, 21905631), (3, 7301877), (9, 2433959), (11, 1991421), (33, 663807), (99, 221269), (409, 53559), (541, 40491), (1227, 17853), (1623, 13497), (3681, 5951), (4499, 4869)]