79884080

素因数分解:

$2^4\times 5^1\times {\mathrm{998551}}^1$

素因数の和:998564

約数の個数: 20

約数和(自身を含む): 185730672

約数和(自身を除く): 105846592

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 998551, 1997102, 3994204, 4992755, 7988408, 9985510, 15976816, 19971020, 39942040, 79884080]

約数ペア:

[(1, 79884080), (2, 39942040), (4, 19971020), (5, 15976816), (8, 9985510), (10, 7988408), (16, 4992755), (20, 3994204), (40, 1997102), (80, 998551)]