21802325

素因数分解:

$5^2\times {\mathrm{71}}^2\times {\mathrm{173}}^1$

素因数の和:325

約数の個数: 18

約数和(自身を含む): 27579522

約数和(自身を除く): 5777197

約数列:

[1, 5, 25, 71, 173, 355, 865, 1775, 4325, 5041, 12283, 25205, 61415, 126025, 307075, 872093, 4360465, 21802325]

約数ペア:

[(1, 21802325), (5, 4360465), (25, 872093), (71, 307075), (173, 126025), (355, 61415), (865, 25205), (1775, 12283), (4325, 5041)]