997191

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{947}}^1$

素因数の和:972

約数の個数: 20

約数和(自身を含む): 1605912

約数和(自身を除く): 608721

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 947, 1053, 2841, 8523, 12311, 25569, 36933, 76707, 110799, 332397, 997191]

約数ペア:

[(1, 997191), (3, 332397), (9, 110799), (13, 76707), (27, 36933), (39, 25569), (81, 12311), (117, 8523), (351, 2841), (947, 1053)]