20389607

素因数分解:

$7^1\times {\mathrm{113}}^1\times {\mathrm{149}}^1\times {\mathrm{173}}^1$

素因数の和:442

約数の個数: 16

約数和(自身を含む): 23803200

約数和(自身を除く): 3413593

約数列:

[1, 7, 113, 149, 173, 791, 1043, 1211, 16837, 19549, 25777, 117859, 136843, 180439, 2912801, 20389607]

約数ペア:

[(1, 20389607), (7, 2912801), (113, 180439), (149, 136843), (173, 117859), (791, 25777), (1043, 19549), (1211, 16837)]