20591907

素因数分解:

$3^1\times 7^2\times {\mathrm{127}}^1\times {\mathrm{1103}}^1$

素因数の和:1247

約数の個数: 24

約数和(自身を含む): 32219136

約数和(自身を除く): 11627229

約数列:

[1, 3, 7, 21, 49, 127, 147, 381, 889, 1103, 2667, 3309, 6223, 7721, 18669, 23163, 54047, 140081, 162141, 420243, 980567, 2941701, 6863969, 20591907]

約数ペア:

[(1, 20591907), (3, 6863969), (7, 2941701), (21, 980567), (49, 420243), (127, 162141), (147, 140081), (381, 54047), (889, 23163), (1103, 18669), (2667, 7721), (3309, 6223)]