31215009

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{12491}}^1$

素因数の和:12525

約数の個数: 24

約数和(自身を含む): 51267168

約数和(自身を除く): 20052159

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 12491, 37473, 87437, 212347, 262311, 612059, 637041, 1486429, 1836177, 4459287, 10405003, 31215009]

約数ペア:

[(1, 31215009), (3, 10405003), (7, 4459287), (17, 1836177), (21, 1486429), (49, 637041), (51, 612059), (119, 262311), (147, 212347), (357, 87437), (833, 37473), (2499, 12491)]