21371690

素因数分解:

$2^1\times 5^1\times {\mathrm{113}}^1\times {\mathrm{18913}}^1$

素因数の和:19033

約数の個数: 16

約数和(自身を含む): 38811528

約数和(自身を除く): 17439838

約数列:

[1, 2, 5, 10, 113, 226, 565, 1130, 18913, 37826, 94565, 189130, 2137169, 4274338, 10685845, 21371690]

約数ペア:

[(1, 21371690), (2, 10685845), (5, 4274338), (10, 2137169), (113, 189130), (226, 94565), (565, 37826), (1130, 18913)]