20880375

素因数分解:

$3^1\times 5^3\times {\mathrm{55681}}^1$

素因数の和:55699

約数の個数: 16

約数和(自身を含む): 34745568

約数和(自身を除く): 13865193

約数列:

[1, 3, 5, 15, 25, 75, 125, 375, 55681, 167043, 278405, 835215, 1392025, 4176075, 6960125, 20880375]

約数ペア:

[(1, 20880375), (3, 6960125), (5, 4176075), (15, 1392025), (25, 835215), (75, 278405), (125, 167043), (375, 55681)]