31118985

素因数分解:

$3^4\times 5^1\times {\mathrm{76837}}^1$

素因数の和:76854

約数の個数: 20

約数和(自身を含む): 55784388

約数和(自身を除く): 24665403

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 76837, 230511, 384185, 691533, 1152555, 2074599, 3457665, 6223797, 10372995, 31118985]

約数ペア:

[(1, 31118985), (3, 10372995), (5, 6223797), (9, 3457665), (15, 2074599), (27, 1152555), (45, 691533), (81, 384185), (135, 230511), (405, 76837)]