20653647

素因数分解:

$3^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{1289}}^1$

素因数の和:1415

約数の個数: 24

約数和(自身を含む): 32353200

約数和(自身を除く): 11699553

約数列:

[1, 3, 7, 21, 49, 109, 147, 327, 763, 1289, 2289, 3867, 5341, 9023, 16023, 27069, 63161, 140501, 189483, 421503, 983507, 2950521, 6884549, 20653647]

約数ペア:

[(1, 20653647), (3, 6884549), (7, 2950521), (21, 983507), (49, 421503), (109, 189483), (147, 140501), (327, 63161), (763, 27069), (1289, 16023), (2289, 9023), (3867, 5341)]