20288079

素因数分解:

$3^2\times 7^1\times {\mathrm{251}}^1\times {\mathrm{1283}}^1$

素因数の和:1547

約数の個数: 24

約数和(自身を含む): 33651072

約数和(自身を除く): 13362993

約数列:

[1, 3, 7, 9, 21, 63, 251, 753, 1283, 1757, 2259, 3849, 5271, 8981, 11547, 15813, 26943, 80829, 322033, 966099, 2254231, 2898297, 6762693, 20288079]

約数ペア:

[(1, 20288079), (3, 6762693), (7, 2898297), (9, 2254231), (21, 966099), (63, 322033), (251, 80829), (753, 26943), (1283, 15813), (1757, 11547), (2259, 8981), (3849, 5271)]