217870155

素因数分解:

$3^5\times 5^1\times {\mathrm{179317}}^1$

素因数の和:179337

約数の個数: 24

約数和(自身を含む): 391630512

約数和(自身を除く): 173760357

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 179317, 537951, 896585, 1613853, 2689755, 4841559, 8069265, 14524677, 24207795, 43574031, 72623385, 217870155]

約数ペア:

[(1, 217870155), (3, 72623385), (5, 43574031), (9, 24207795), (15, 14524677), (27, 8069265), (45, 4841559), (81, 2689755), (135, 1613853), (243, 896585), (405, 537951), (1215, 179317)]