21222981

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{9547}}^1$

素因数の和:9585

約数の個数: 24

約数和(自身を含む): 34754720

約数和(自身を除く): 13531739

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 171, 247, 741, 2223, 9547, 28641, 85923, 124111, 181393, 372333, 544179, 1116999, 1632537, 2358109, 7074327, 21222981]

約数ペア:

[(1, 21222981), (3, 7074327), (9, 2358109), (13, 1632537), (19, 1116999), (39, 544179), (57, 372333), (117, 181393), (171, 124111), (247, 85923), (741, 28641), (2223, 9547)]