20831985

素因数分解:

$3^4\times 5^1\times {\mathrm{51437}}^1$

素因数の和:51454

約数の個数: 20

約数和(自身を含む): 37343988

約数和(自身を除く): 16512003

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 51437, 154311, 257185, 462933, 771555, 1388799, 2314665, 4166397, 6943995, 20831985]

約数ペア:

[(1, 20831985), (3, 6943995), (5, 4166397), (9, 2314665), (15, 1388799), (27, 771555), (45, 462933), (81, 257185), (135, 154311), (405, 51437)]