20902155

素因数分解:

$3^1\times 5^1\times {\mathrm{887}}^1\times {\mathrm{1571}}^1$

素因数の和:2466

約数の個数: 16

約数和(自身を含む): 33502464

約数和(自身を除く): 12600309

約数列:

[1, 3, 5, 15, 887, 1571, 2661, 4435, 4713, 7855, 13305, 23565, 1393477, 4180431, 6967385, 20902155]

約数ペア:

[(1, 20902155), (3, 6967385), (5, 4180431), (15, 1393477), (887, 23565), (1571, 13305), (2661, 7855), (4435, 4713)]