20964867

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1931}}^1$

素因数の和:1999

約数の個数: 32

約数和(自身を含む): 35610624

約数和(自身を除く): 14645757

約数列:

[1, 3, 7, 11, 21, 33, 47, 77, 141, 231, 329, 517, 987, 1551, 1931, 3619, 5793, 10857, 13517, 21241, 40551, 63723, 90757, 148687, 272271, 446061, 635299, 998327, 1905897, 2994981, 6988289, 20964867]

約数ペア:

[(1, 20964867), (3, 6988289), (7, 2994981), (11, 1905897), (21, 998327), (33, 635299), (47, 446061), (77, 272271), (141, 148687), (231, 90757), (329, 63723), (517, 40551), (987, 21241), (1551, 13517), (1931, 10857), (3619, 5793)]