81419985

素因数分解:

$3^4\times 5^1\times {\mathrm{201037}}^1$

素因数の和:201054

約数の個数: 20

約数和(自身を含む): 145953588

約数和(自身を除く): 64533603

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 201037, 603111, 1005185, 1809333, 3015555, 5427999, 9046665, 16283997, 27139995, 81419985]

約数ペア:

[(1, 81419985), (3, 27139995), (5, 16283997), (9, 9046665), (15, 5427999), (27, 3015555), (45, 1809333), (81, 1005185), (135, 603111), (405, 201037)]