87391420

素因数分解:

$2^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{18131}}^1$

素因数の和:18381

約数の個数: 24

約数和(自身を含む): 184293648

約数和(自身を除く): 96902228

約数列:

[1, 2, 4, 5, 10, 20, 241, 482, 964, 1205, 2410, 4820, 18131, 36262, 72524, 90655, 181310, 362620, 4369571, 8739142, 17478284, 21847855, 43695710, 87391420]

約数ペア:

[(1, 87391420), (2, 43695710), (4, 21847855), (5, 17478284), (10, 8739142), (20, 4369571), (241, 362620), (482, 181310), (964, 90655), (1205, 72524), (2410, 36262), (4820, 18131)]