21000228225

素因数分解:

$3^1\times 5^2\times {\mathrm{280003043}}^1$

素因数の和:280003056

約数の個数: 12

約数和(自身を含む): 34720377456

約数和(自身を除く): 13720149231

約数列:

[1, 3, 5, 15, 25, 75, 280003043, 840009129, 1400015215, 4200045645, 7000076075, 21000228225]

約数ペア:

[(1, 21000228225), (3, 7000076075), (5, 4200045645), (15, 1400015215), (25, 840009129), (75, 280003043)]