20145279

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2357}}^1$

素因数の和:2415

約数の個数: 32

約数和(自身を含む): 34407936

約数和(自身を除く): 14262657

約数列:

[1, 3, 7, 11, 21, 33, 37, 77, 111, 231, 259, 407, 777, 1221, 2357, 2849, 7071, 8547, 16499, 25927, 49497, 77781, 87209, 181489, 261627, 544467, 610463, 959299, 1831389, 2877897, 6715093, 20145279]

約数ペア:

[(1, 20145279), (3, 6715093), (7, 2877897), (11, 1831389), (21, 959299), (33, 610463), (37, 544467), (77, 261627), (111, 181489), (231, 87209), (259, 77781), (407, 49497), (777, 25927), (1221, 16499), (2357, 8547), (2849, 7071)]