20206975

素因数分解:

$5^2\times {\mathrm{19}}^2\times {\mathrm{2239}}^1$

素因数の和:2287

約数の個数: 18

約数和(自身を含む): 26456640

約数和(自身を除く): 6249665

約数列:

[1, 5, 19, 25, 95, 361, 475, 1805, 2239, 9025, 11195, 42541, 55975, 212705, 808279, 1063525, 4041395, 20206975]

約数ペア:

[(1, 20206975), (5, 4041395), (19, 1063525), (25, 808279), (95, 212705), (361, 55975), (475, 42541), (1805, 11195), (2239, 9025)]