21188020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{151343}}^1$

素因数の和:151359

約数の個数: 24

約数和(自身を含む): 50851584

約数和(自身を除く): 29663564

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 151343, 302686, 605372, 756715, 1059401, 1513430, 2118802, 3026860, 4237604, 5297005, 10594010, 21188020]

約数ペア:

[(1, 21188020), (2, 10594010), (4, 5297005), (5, 4237604), (7, 3026860), (10, 2118802), (14, 1513430), (20, 1059401), (28, 756715), (35, 605372), (70, 302686), (140, 151343)]