20563581

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{47}}^2\times {\mathrm{107}}^1$

素因数の和:233

約数の個数: 24

約数和(自身を含む): 29250720

約数和(自身を除く): 8687139

約数列:

[1, 3, 29, 47, 87, 107, 141, 321, 1363, 2209, 3103, 4089, 5029, 6627, 9309, 15087, 64061, 145841, 192183, 236363, 437523, 709089, 6854527, 20563581]

約数ペア:

[(1, 20563581), (3, 6854527), (29, 709089), (47, 437523), (87, 236363), (107, 192183), (141, 145841), (321, 64061), (1363, 15087), (2209, 9309), (3103, 6627), (4089, 5029)]