20845981

素因数分解:

${\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{173}}^1$

素因数の和:253

約数の個数: 24

約数和(自身を含む): 24454656

約数和(自身を除く): 3608675

約数列:

[1, 13, 23, 31, 169, 173, 299, 403, 713, 2249, 3887, 3979, 5239, 5363, 9269, 29237, 51727, 69719, 120497, 123349, 672451, 906347, 1603537, 20845981]

約数ペア:

[(1, 20845981), (13, 1603537), (23, 906347), (31, 672451), (169, 123349), (173, 120497), (299, 69719), (403, 51727), (713, 29237), (2249, 9269), (3887, 5363), (3979, 5239)]