20405728880

素因数分解:

$2^4\times 5^1\times {\mathrm{255071611}}^1$

素因数の和:255071624

約数の個数: 20

約数和(自身を含む): 47443319832

約数和(自身を除く): 27037590952

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 255071611, 510143222, 1020286444, 1275358055, 2040572888, 2550716110, 4081145776, 5101432220, 10202864440, 20405728880]

約数ペア:

[(1, 20405728880), (2, 10202864440), (4, 5101432220), (5, 4081145776), (8, 2550716110), (10, 2040572888), (16, 1275358055), (20, 1020286444), (40, 510143222), (80, 255071611)]