20865585

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{8231}}^1$

素因数の和:8265

約数の個数: 24

約数和(自身を含む): 36154944

約数和(自身を除く): 15289359

約数列:

[1, 3, 5, 13, 15, 39, 65, 169, 195, 507, 845, 2535, 8231, 24693, 41155, 107003, 123465, 321009, 535015, 1391039, 1605045, 4173117, 6955195, 20865585]

約数ペア:

[(1, 20865585), (3, 6955195), (5, 4173117), (13, 1605045), (15, 1391039), (39, 535015), (65, 321009), (169, 123465), (195, 107003), (507, 41155), (845, 24693), (2535, 8231)]