15661919

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1069}}^1$

素因数の和:1119

約数の個数: 24

約数和(自身を含む): 20492640

約数和(自身を除く): 4830721

約数列:

[1, 7, 13, 23, 49, 91, 161, 299, 637, 1069, 1127, 2093, 7483, 13897, 14651, 24587, 52381, 97279, 172109, 319631, 680953, 1204763, 2237417, 15661919]

約数ペア:

[(1, 15661919), (7, 2237417), (13, 1204763), (23, 680953), (49, 319631), (91, 172109), (161, 97279), (299, 52381), (637, 24587), (1069, 14651), (1127, 13897), (2093, 7483)]