51640640

素因数分解:

$2^6\times 5^1\times {\mathrm{161377}}^1$

素因数の和:161394

約数の個数: 28

約数和(自身を含む): 122970036

約数和(自身を除く): 71329396

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 161377, 322754, 645508, 806885, 1291016, 1613770, 2582032, 3227540, 5164064, 6455080, 10328128, 12910160, 25820320, 51640640]

約数ペア:

[(1, 51640640), (2, 25820320), (4, 12910160), (5, 10328128), (8, 6455080), (10, 5164064), (16, 3227540), (20, 2582032), (32, 1613770), (40, 1291016), (64, 806885), (80, 645508), (160, 322754), (320, 161377)]