20645410

素因数分解:

$2^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{20441}}^1$

素因数の和:20549

約数の個数: 16

約数和(自身を含む): 37531512

約数和(自身を除く): 16886102

約数列:

[1, 2, 5, 10, 101, 202, 505, 1010, 20441, 40882, 102205, 204410, 2064541, 4129082, 10322705, 20645410]

約数ペア:

[(1, 20645410), (2, 10322705), (5, 4129082), (10, 2064541), (101, 204410), (202, 102205), (505, 40882), (1010, 20441)]