21689570

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{309851}}^1$

素因数の和:309865

約数の個数: 16

約数和(自身を含む): 44618688

約数和(自身を除く): 22929118

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 309851, 619702, 1549255, 2168957, 3098510, 4337914, 10844785, 21689570]

約数ペア:

[(1, 21689570), (2, 10844785), (5, 4337914), (7, 3098510), (10, 2168957), (14, 1549255), (35, 619702), (70, 309851)]