64571985

素因数分解:

$3^4\times 5^1\times {\mathrm{159437}}^1$

素因数の和:159454

約数の個数: 20

約数和(自身を含む): 115751988

約数和(自身を除く): 51180003

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 159437, 478311, 797185, 1434933, 2391555, 4304799, 7174665, 12914397, 21523995, 64571985]

約数ペア:

[(1, 64571985), (3, 21523995), (5, 12914397), (9, 7174665), (15, 4304799), (27, 2391555), (45, 1434933), (81, 797185), (135, 478311), (405, 159437)]