20427155

素因数分解:

$5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{3917}}^1$

素因数の和:4078

約数の個数: 16

約数和(自身を含む): 28209600

約数和(自身を除く): 7782445

約数列:

[1, 5, 7, 35, 149, 745, 1043, 3917, 5215, 19585, 27419, 137095, 583633, 2918165, 4085431, 20427155]

約数ペア:

[(1, 20427155), (5, 4085431), (7, 2918165), (35, 583633), (149, 137095), (745, 27419), (1043, 19585), (3917, 5215)]