19891875

素因数分解:

$3^1\times 5^4\times {\mathrm{103}}^2$

素因数の和:229

約数の個数: 30

約数和(自身を含む): 33467412

約数和(自身を除く): 13575537

約数列:

[1, 3, 5, 15, 25, 75, 103, 125, 309, 375, 515, 625, 1545, 1875, 2575, 7725, 10609, 12875, 31827, 38625, 53045, 64375, 159135, 193125, 265225, 795675, 1326125, 3978375, 6630625, 19891875]

約数ペア:

[(1, 19891875), (3, 6630625), (5, 3978375), (15, 1326125), (25, 795675), (75, 265225), (103, 193125), (125, 159135), (309, 64375), (375, 53045), (515, 38625), (625, 31827), (1545, 12875), (1875, 10609), (2575, 7725)]