20578925

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1181}}^1$

素因数の和:1249

約数の個数: 24

約数和(自身を含む): 27701352

約数和(自身を除く): 7122427

約数列:

[1, 5, 17, 25, 41, 85, 205, 425, 697, 1025, 1181, 3485, 5905, 17425, 20077, 29525, 48421, 100385, 242105, 501925, 823157, 1210525, 4115785, 20578925]

約数ペア:

[(1, 20578925), (5, 4115785), (17, 1210525), (25, 823157), (41, 501925), (85, 242105), (205, 100385), (425, 48421), (697, 29525), (1025, 20077), (1181, 17425), (3485, 5905)]