20506575

素因数分解:

$3^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{3851}}^1$

素因数の和:3935

約数の個数: 24

約数和(自身を含む): 34390656

約数和(自身を除く): 13884081

約数列:

[1, 3, 5, 15, 25, 71, 75, 213, 355, 1065, 1775, 3851, 5325, 11553, 19255, 57765, 96275, 273421, 288825, 820263, 1367105, 4101315, 6835525, 20506575]

約数ペア:

[(1, 20506575), (3, 6835525), (5, 4101315), (15, 1367105), (25, 820263), (71, 288825), (75, 273421), (213, 96275), (355, 57765), (1065, 19255), (1775, 11553), (3851, 5325)]