19504370420

素因数分解:

$2^2\times 5^1\times {\mathrm{975218521}}^1$

素因数の和:975218530

約数の個数: 12

約数和(自身を含む): 40959177924

約数和(自身を除く): 21454807504

約数列:

[1, 2, 4, 5, 10, 20, 975218521, 1950437042, 3900874084, 4876092605, 9752185210, 19504370420]

約数ペア:

[(1, 19504370420), (2, 9752185210), (4, 4876092605), (5, 3900874084), (10, 1950437042), (20, 975218521)]