21513033

素因数分解:

$3^5\times {\mathrm{223}}^1\times {\mathrm{397}}^1$

素因数の和:635

約数の個数: 24

約数和(自身を含む): 32451328

約数和(自身を除く): 10938295

約数列:

[1, 3, 9, 27, 81, 223, 243, 397, 669, 1191, 2007, 3573, 6021, 10719, 18063, 32157, 54189, 88531, 96471, 265593, 796779, 2390337, 7171011, 21513033]

約数ペア:

[(1, 21513033), (3, 7171011), (9, 2390337), (27, 796779), (81, 265593), (223, 96471), (243, 88531), (397, 54189), (669, 32157), (1191, 18063), (2007, 10719), (3573, 6021)]