21385125

素因数分解:

$3^2\times 5^3\times {\mathrm{19009}}^1$

素因数の和:19030

約数の個数: 24

約数和(自身を含む): 38552280

約数和(自身を除く): 17167155

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 225, 375, 1125, 19009, 57027, 95045, 171081, 285135, 475225, 855405, 1425675, 2376125, 4277025, 7128375, 21385125]

約数ペア:

[(1, 21385125), (3, 7128375), (5, 4277025), (9, 2376125), (15, 1425675), (25, 855405), (45, 475225), (75, 285135), (125, 171081), (225, 95045), (375, 57027), (1125, 19009)]