21377025

素因数分解:

$3^2\times 5^2\times {\mathrm{95009}}^1$

素因数の和:95025

約数の個数: 18

約数和(自身を含む): 38289030

約数和(自身を除く): 16912005

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 95009, 285027, 475045, 855081, 1425135, 2375225, 4275405, 7125675, 21377025]

約数ペア:

[(1, 21377025), (3, 7125675), (5, 4275405), (9, 2375225), (15, 1425135), (25, 855081), (45, 475045), (75, 285027), (225, 95009)]