21870359

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{643}}^1$

素因数の和:806

約数の個数: 16

約数和(自身を含む): 25842432

約数和(自身を除く): 3972073

約数列:

[1, 7, 43, 113, 301, 643, 791, 4501, 4859, 27649, 34013, 72659, 193543, 508613, 3124337, 21870359]

約数ペア:

[(1, 21870359), (7, 3124337), (43, 508613), (113, 193543), (301, 72659), (643, 34013), (791, 27649), (4501, 4859)]