18821240

素因数分解:

$2^3\times 5^1\times {\mathrm{470531}}^1$

素因数の和:470542

約数の個数: 16

約数和(自身を含む): 42347880

約数和(自身を除く): 23526640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 470531, 941062, 1882124, 2352655, 3764248, 4705310, 9410620, 18821240]

約数ペア:

[(1, 18821240), (2, 9410620), (4, 4705310), (5, 3764248), (8, 2352655), (10, 1882124), (20, 941062), (40, 470531)]