20845210

素因数分解:

$2^1\times 5^1\times {\mathrm{521}}^1\times {\mathrm{4001}}^1$

素因数の和:4529

約数の個数: 16

約数和(自身を含む): 37602792

約数和(自身を除く): 16757582

約数列:

[1, 2, 5, 10, 521, 1042, 2605, 4001, 5210, 8002, 20005, 40010, 2084521, 4169042, 10422605, 20845210]

約数ペア:

[(1, 20845210), (2, 10422605), (5, 4169042), (10, 2084521), (521, 40010), (1042, 20005), (2605, 8002), (4001, 5210)]