20397657

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1\times {\mathrm{163}}^1$

素因数の和:333

約数の個数: 32

約数和(自身を含む): 32117760

約数和(自身を除く): 11720103

約数列:

[1, 3, 7, 21, 59, 101, 163, 177, 303, 413, 489, 707, 1141, 1239, 2121, 3423, 5959, 9617, 16463, 17877, 28851, 41713, 49389, 67319, 115241, 125139, 201957, 345723, 971317, 2913951, 6799219, 20397657]

約数ペア:

[(1, 20397657), (3, 6799219), (7, 2913951), (21, 971317), (59, 345723), (101, 201957), (163, 125139), (177, 115241), (303, 67319), (413, 49389), (489, 41713), (707, 28851), (1141, 17877), (1239, 16463), (2121, 9617), (3423, 5959)]