397345880

素因数分解:

$2^3\times 5^1\times {\mathrm{9933647}}^1$

素因数の和:9933658

約数の個数: 16

約数和(自身を含む): 894028320

約数和(自身を除く): 496682440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9933647, 19867294, 39734588, 49668235, 79469176, 99336470, 198672940, 397345880]

約数ペア:

[(1, 397345880), (2, 198672940), (4, 99336470), (5, 79469176), (8, 49668235), (10, 39734588), (20, 19867294), (40, 9933647)]