28351875

素因数分解:

$3^1\times 5^4\times {\mathrm{15121}}^1$

素因数の和:15144

約数の個数: 20

約数和(自身を含む): 47241128

約数和(自身を除く): 18889253

約数列:

[1, 3, 5, 15, 25, 75, 125, 375, 625, 1875, 15121, 45363, 75605, 226815, 378025, 1134075, 1890125, 5670375, 9450625, 28351875]

約数ペア:

[(1, 28351875), (3, 9450625), (5, 5670375), (15, 1890125), (25, 1134075), (75, 378025), (125, 226815), (375, 75605), (625, 45363), (1875, 15121)]