20995965

素因数分解:

$3^2\times 5^1\times {\mathrm{113}}^1\times {\mathrm{4129}}^1$

素因数の和:4253

約数の個数: 24

約数和(自身を含む): 36723960

約数和(自身を除く): 15727995

約数列:

[1, 3, 5, 9, 15, 45, 113, 339, 565, 1017, 1695, 4129, 5085, 12387, 20645, 37161, 61935, 185805, 466577, 1399731, 2332885, 4199193, 6998655, 20995965]

約数ペア:

[(1, 20995965), (3, 6998655), (5, 4199193), (9, 2332885), (15, 1399731), (45, 466577), (113, 185805), (339, 61935), (565, 37161), (1017, 20645), (1695, 12387), (4129, 5085)]