2478681

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{431}}^1$

素因数の和:514

約数の個数: 20

約数和(自身を含む): 3763584

約数和(自身を除く): 1284903

約数列:

[1, 3, 9, 27, 71, 81, 213, 431, 639, 1293, 1917, 3879, 5751, 11637, 30601, 34911, 91803, 275409, 826227, 2478681]

約数ペア:

[(1, 2478681), (3, 826227), (9, 275409), (27, 91803), (71, 34911), (81, 30601), (213, 11637), (431, 5751), (639, 3879), (1293, 1917)]