21073125

素因数分解:

$3^1\times 5^4\times {\mathrm{11239}}^1$

素因数の和:11262

約数の個数: 20

約数和(自身を含む): 35113760

約数和(自身を除く): 14040635

約数列:

[1, 3, 5, 15, 25, 75, 125, 375, 625, 1875, 11239, 33717, 56195, 168585, 280975, 842925, 1404875, 4214625, 7024375, 21073125]

約数ペア:

[(1, 21073125), (3, 7024375), (5, 4214625), (15, 1404875), (25, 842925), (75, 280975), (125, 168585), (375, 56195), (625, 33717), (1875, 11239)]