20996210

素因数分解:

$2^1\times 5^1\times {\mathrm{541}}^1\times {\mathrm{3881}}^1$

素因数の和:4429

約数の個数: 16

約数和(自身を含む): 37872792

約数和(自身を除く): 16876582

約数列:

[1, 2, 5, 10, 541, 1082, 2705, 3881, 5410, 7762, 19405, 38810, 2099621, 4199242, 10498105, 20996210]

約数ペア:

[(1, 20996210), (2, 10498105), (5, 4199242), (10, 2099621), (541, 38810), (1082, 19405), (2705, 7762), (3881, 5410)]