21820605

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{85571}}^1$

素因数の和:85596

約数の個数: 16

約数和(自身を含む): 36967104

約数和(自身を除く): 15146499

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 85571, 256713, 427855, 1283565, 1454707, 4364121, 7273535, 21820605]

約数ペア:

[(1, 21820605), (3, 7273535), (5, 4364121), (15, 1454707), (17, 1283565), (51, 427855), (85, 256713), (255, 85571)]