81387481

素因数分解:

$7^2\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{373}}^1$

素因数の和:521

約数の個数: 24

約数和(自身を含む): 97806984

約数和(自身を除く): 16419503

約数列:

[1, 7, 49, 61, 73, 373, 427, 511, 2611, 2989, 3577, 4453, 18277, 22753, 27229, 31171, 159271, 190603, 218197, 1114897, 1334221, 1660969, 11626783, 81387481]

約数ペア:

[(1, 81387481), (7, 11626783), (49, 1660969), (61, 1334221), (73, 1114897), (373, 218197), (427, 190603), (511, 159271), (2611, 31171), (2989, 27229), (3577, 22753), (4453, 18277)]