1556487981

素因数分解:

$3^4\times {\mathrm{89}}^1\times {\mathrm{215909}}^1$

素因数の和:216010

約数の個数: 20

約数和(自身を含む): 2351259900

約数和(自身を除く): 794771919

約数列:

[1, 3, 9, 27, 81, 89, 267, 801, 2403, 7209, 215909, 647727, 1943181, 5829543, 17488629, 19215901, 57647703, 172943109, 518829327, 1556487981]

約数ペア:

[(1, 1556487981), (3, 518829327), (9, 172943109), (27, 57647703), (81, 19215901), (89, 17488629), (267, 5829543), (801, 1943181), (2403, 647727), (7209, 215909)]