39788894380

素因数分解:

$2^2\times 5^1\times {\mathrm{1989444719}}^1$

素因数の和:1989444728

約数の個数: 12

約数和(自身を含む): 83556678240

約数和(自身を除く): 43767783860

約数列:

[1, 2, 4, 5, 10, 20, 1989444719, 3978889438, 7957778876, 9947223595, 19894447190, 39788894380]

約数ペア:

[(1, 39788894380), (2, 19894447190), (4, 9947223595), (5, 7957778876), (10, 3978889438), (20, 1989444719)]