21878343

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{8713}}^1$

素因数の和:8756

約数の個数: 20

約数和(自身を含む): 33740608

約数和(自身を除く): 11862265

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 8713, 26139, 78417, 235251, 270103, 705753, 810309, 2430927, 7292781, 21878343]

約数ペア:

[(1, 21878343), (3, 7292781), (9, 2430927), (27, 810309), (31, 705753), (81, 270103), (93, 235251), (279, 78417), (837, 26139), (2511, 8713)]