21412989

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{461}}^1$

素因数の和:877

約数の個数: 24

約数和(自身を含む): 33465432

約数和(自身を除く): 12052443

約数列:

[1, 3, 9, 13, 39, 117, 397, 461, 1191, 1383, 3573, 4149, 5161, 5993, 15483, 17979, 46449, 53937, 183017, 549051, 1647153, 2379221, 7137663, 21412989]

約数ペア:

[(1, 21412989), (3, 7137663), (9, 2379221), (13, 1647153), (39, 549051), (117, 183017), (397, 53937), (461, 46449), (1191, 17979), (1383, 15483), (3573, 5993), (4149, 5161)]