20874009

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{1721}}^1$

素因数の和:2048

約数の個数: 16

約数和(自身を含む): 30086784

約数和(自身を除く): 9212775

約数列:

[1, 3, 13, 39, 311, 933, 1721, 4043, 5163, 12129, 22373, 67119, 535231, 1605693, 6958003, 20874009]

約数ペア:

[(1, 20874009), (3, 6958003), (13, 1605693), (39, 535231), (311, 67119), (933, 22373), (1721, 12129), (4043, 5163)]