17921943

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{11783}}^1$

素因数の和:11815

約数の個数: 18

約数和(自身を含む): 28034136

約数和(自身を除く): 10112193

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1521, 11783, 35349, 106047, 153179, 459537, 1378611, 1991327, 5973981, 17921943]

約数ペア:

[(1, 17921943), (3, 5973981), (9, 1991327), (13, 1378611), (39, 459537), (117, 153179), (169, 106047), (507, 35349), (1521, 11783)]