257029101

素因数分解:

$3^2\times 7^1\times {\mathrm{193}}^1\times {\mathrm{21139}}^1$

素因数の和:21345

約数の個数: 24

約数和(自身を含む): 426520640

約数和(自身を除く): 169491539

約数列:

[1, 3, 7, 9, 21, 63, 193, 579, 1351, 1737, 4053, 12159, 21139, 63417, 147973, 190251, 443919, 1331757, 4079827, 12239481, 28558789, 36718443, 85676367, 257029101]

約数ペア:

[(1, 257029101), (3, 85676367), (7, 36718443), (9, 28558789), (21, 12239481), (63, 4079827), (193, 1331757), (579, 443919), (1351, 190251), (1737, 147973), (4053, 63417), (12159, 21139)]