439922020

素因数分解:

$2^2\times 5^1\times {\mathrm{1721}}^1\times {\mathrm{12781}}^1$

素因数の和:14511

約数の個数: 24

約数和(自身を含む): 924445368

約数和(自身を除く): 484523348

約数列:

[1, 2, 4, 5, 10, 20, 1721, 3442, 6884, 8605, 12781, 17210, 25562, 34420, 51124, 63905, 127810, 255620, 21996101, 43992202, 87984404, 109980505, 219961010, 439922020]

約数ペア:

[(1, 439922020), (2, 219961010), (4, 109980505), (5, 87984404), (10, 43992202), (20, 21996101), (1721, 255620), (3442, 127810), (6884, 63905), (8605, 51124), (12781, 34420), (17210, 25562)]