20761875

素因数分解:

$3^2\times 5^4\times {\mathrm{3691}}^1$

素因数の和:3717

約数の個数: 30

約数和(自身を含む): 37484876

約数和(自身を除く): 16723001

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 225, 375, 625, 1125, 1875, 3691, 5625, 11073, 18455, 33219, 55365, 92275, 166095, 276825, 461375, 830475, 1384125, 2306875, 4152375, 6920625, 20761875]

約数ペア:

[(1, 20761875), (3, 6920625), (5, 4152375), (9, 2306875), (15, 1384125), (25, 830475), (45, 461375), (75, 276825), (125, 166095), (225, 92275), (375, 55365), (625, 33219), (1125, 18455), (1875, 11073), (3691, 5625)]