1278113985

素因数分解:

$3^4\times 5^1\times {\mathrm{3155837}}^1$

素因数の和:3155854

約数の個数: 20

約数和(自身を含む): 2291138388

約数和(自身を除く): 1013024403

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 3155837, 9467511, 15779185, 28402533, 47337555, 85207599, 142012665, 255622797, 426037995, 1278113985]

約数ペア:

[(1, 1278113985), (3, 426037995), (5, 255622797), (9, 142012665), (15, 85207599), (27, 47337555), (45, 28402533), (81, 15779185), (135, 9467511), (405, 3155837)]