21468020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{153343}}^1$

素因数の和:153359

約数の個数: 24

約数和(自身を含む): 51523584

約数和(自身を除く): 30055564

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 153343, 306686, 613372, 766715, 1073401, 1533430, 2146802, 3066860, 4293604, 5367005, 10734010, 21468020]

約数ペア:

[(1, 21468020), (2, 10734010), (4, 5367005), (5, 4293604), (7, 3066860), (10, 2146802), (14, 1533430), (20, 1073401), (28, 766715), (35, 613372), (70, 306686), (140, 153343)]