21381438

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{274121}}^1$

素因数の和:274139

約数の個数: 16

約数和(自身を含む): 46052496

約数和(自身を除く): 24671058

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 274121, 548242, 822363, 1644726, 3563573, 7127146, 10690719, 21381438]

約数ペア:

[(1, 21381438), (2, 10690719), (3, 7127146), (6, 3563573), (13, 1644726), (26, 822363), (39, 548242), (78, 274121)]