20197797380

素因数分解:

$2^2\times 5^1\times {\mathrm{1009889869}}^1$

素因数の和:1009889878

約数の個数: 12

約数和(自身を含む): 42415374540

約数和(自身を除く): 22217577160

約数列:

[1, 2, 4, 5, 10, 20, 1009889869, 2019779738, 4039559476, 5049449345, 10098898690, 20197797380]

約数ペア:

[(1, 20197797380), (2, 10098898690), (4, 5049449345), (5, 4039559476), (10, 2019779738), (20, 1009889869)]