21000299025

素因数分解:

$3^1\times 5^2\times {\mathrm{280003987}}^1$

素因数の和:280004000

約数の個数: 12

約数和(自身を含む): 34720494512

約数和(自身を除く): 13720195487

約数列:

[1, 3, 5, 15, 25, 75, 280003987, 840011961, 1400019935, 4200059805, 7000099675, 21000299025]

約数ペア:

[(1, 21000299025), (3, 7000099675), (5, 4200059805), (15, 1400019935), (25, 840011961), (75, 280003987)]