20806475

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{383}}^1$

素因数の和:487

約数の個数: 24

約数和(自身を含む): 26998272

約数和(自身を除く): 6191797

約数列:

[1, 5, 25, 41, 53, 205, 265, 383, 1025, 1325, 1915, 2173, 9575, 10865, 15703, 20299, 54325, 78515, 101495, 392575, 507475, 832259, 4161295, 20806475]

約数ペア:

[(1, 20806475), (5, 4161295), (25, 832259), (41, 507475), (53, 392575), (205, 101495), (265, 78515), (383, 54325), (1025, 20299), (1325, 15703), (1915, 10865), (2173, 9575)]