20915931

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{5591}}^1$

素因数の和:5666

約数の個数: 16

約数和(自身を含む): 29525760

約数和(自身を除く): 8609829

約数列:

[1, 3, 29, 43, 87, 129, 1247, 3741, 5591, 16773, 162139, 240413, 486417, 721239, 6971977, 20915931]

約数ペア:

[(1, 20915931), (3, 6971977), (29, 721239), (43, 486417), (87, 240413), (129, 162139), (1247, 16773), (3741, 5591)]