17991207

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{51257}}^1$

素因数の和:51279

約数の個数: 16

約数和(自身を含む): 28704480

約数和(自身を除く): 10713273

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 51257, 153771, 461313, 666341, 1383939, 1999023, 5997069, 17991207]

約数ペア:

[(1, 17991207), (3, 5997069), (9, 1999023), (13, 1383939), (27, 666341), (39, 461313), (117, 153771), (351, 51257)]