25220080

素因数分解:

$2^4\times 5^1\times {\mathrm{315251}}^1$

素因数の和:315264

約数の個数: 20

約数和(自身を含む): 58636872

約数和(自身を除く): 33416792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 315251, 630502, 1261004, 1576255, 2522008, 3152510, 5044016, 6305020, 12610040, 25220080]

約数ペア:

[(1, 25220080), (2, 12610040), (4, 6305020), (5, 5044016), (8, 3152510), (10, 2522008), (16, 1576255), (20, 1261004), (40, 630502), (80, 315251)]