18081620

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{14821}}^1$

素因数の和:14891

約数の個数: 24

約数和(自身を含む): 38596488

約数和(自身を除く): 20514868

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 14821, 29642, 59284, 74105, 148210, 296420, 904081, 1808162, 3616324, 4520405, 9040810, 18081620]

約数ペア:

[(1, 18081620), (2, 9040810), (4, 4520405), (5, 3616324), (10, 1808162), (20, 904081), (61, 296420), (122, 148210), (244, 74105), (305, 59284), (610, 29642), (1220, 14821)]