28271997

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{26849}}^1$

素因数の和:26874

約数の個数: 20

約数和(自身を含む): 45483900

約数和(自身を除く): 17211903

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 26849, 80547, 241641, 349037, 724923, 1047111, 2174769, 3141333, 9423999, 28271997]

約数ペア:

[(1, 28271997), (3, 9423999), (9, 3141333), (13, 2174769), (27, 1047111), (39, 724923), (81, 349037), (117, 241641), (351, 80547), (1053, 26849)]