21097550

素因数分解:

$2^1\times 5^2\times {\mathrm{131}}^1\times {\mathrm{3221}}^1$

素因数の和:3364

約数の個数: 24

約数和(自身を含む): 39553272

約数和(自身を除く): 18455722

約数列:

[1, 2, 5, 10, 25, 50, 131, 262, 655, 1310, 3221, 3275, 6442, 6550, 16105, 32210, 80525, 161050, 421951, 843902, 2109755, 4219510, 10548775, 21097550]

約数ペア:

[(1, 21097550), (2, 10548775), (5, 4219510), (10, 2109755), (25, 843902), (50, 421951), (131, 161050), (262, 80525), (655, 32210), (1310, 16105), (3221, 6550), (3275, 6442)]