20979933

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1231}}^1$

素因数の和:1289

約数の個数: 32

約数和(自身を含む): 33116160

約数和(自身を除く): 12136227

約数列:

[1, 3, 13, 19, 23, 39, 57, 69, 247, 299, 437, 741, 897, 1231, 1311, 3693, 5681, 16003, 17043, 23389, 28313, 48009, 70167, 84939, 304057, 368069, 537947, 912171, 1104207, 1613841, 6993311, 20979933]

約数ペア:

[(1, 20979933), (3, 6993311), (13, 1613841), (19, 1104207), (23, 912171), (39, 537947), (57, 368069), (69, 304057), (247, 84939), (299, 70167), (437, 48009), (741, 28313), (897, 23389), (1231, 17043), (1311, 16003), (3693, 5681)]