165742480

素因数分解:

$2^4\times 5^1\times {\mathrm{2071781}}^1$

素因数の和:2071794

約数の個数: 20

約数和(自身を含む): 385351452

約数和(自身を除く): 219608972

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2071781, 4143562, 8287124, 10358905, 16574248, 20717810, 33148496, 41435620, 82871240, 165742480]

約数ペア:

[(1, 165742480), (2, 82871240), (4, 41435620), (5, 33148496), (8, 20717810), (10, 16574248), (16, 10358905), (20, 8287124), (40, 4143562), (80, 2071781)]