39804579740

素因数分解:

$2^2\times 5^1\times {\mathrm{1990228987}}^1$

素因数の和:1990228996

約数の個数: 12

約数和(自身を含む): 83589617496

約数和(自身を除く): 43785037756

約数列:

[1, 2, 4, 5, 10, 20, 1990228987, 3980457974, 7960915948, 9951144935, 19902289870, 39804579740]

約数ペア:

[(1, 39804579740), (2, 19902289870), (4, 9951144935), (5, 7960915948), (10, 3980457974), (20, 1990228987)]