18687340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{133481}}^1$

素因数の和:133497

約数の個数: 24

約数和(自身を含む): 44849952

約数和(自身を除く): 26162612

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 133481, 266962, 533924, 667405, 934367, 1334810, 1868734, 2669620, 3737468, 4671835, 9343670, 18687340]

約数ペア:

[(1, 18687340), (2, 9343670), (4, 4671835), (5, 3737468), (7, 2669620), (10, 1868734), (14, 1334810), (20, 934367), (28, 667405), (35, 533924), (70, 266962), (140, 133481)]