21009430

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{161611}}^1$

素因数の和:161631

約数の個数: 16

約数和(自身を含む): 40726224

約数和(自身を除く): 19716794

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 161611, 323222, 808055, 1616110, 2100943, 4201886, 10504715, 21009430]

約数ペア:

[(1, 21009430), (2, 10504715), (5, 4201886), (10, 2100943), (13, 1616110), (26, 808055), (65, 323222), (130, 161611)]