19704555

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{2591}}^1$

素因数の和:2628

約数の個数: 36

約数和(自身を含む): 36998208

約数和(自身を除く): 17293653

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 169, 195, 507, 585, 845, 1521, 2535, 2591, 7605, 7773, 12955, 23319, 33683, 38865, 101049, 116595, 168415, 303147, 437879, 505245, 1313637, 1515735, 2189395, 3940911, 6568185, 19704555]

約数ペア:

[(1, 19704555), (3, 6568185), (5, 3940911), (9, 2189395), (13, 1515735), (15, 1313637), (39, 505245), (45, 437879), (65, 303147), (117, 168415), (169, 116595), (195, 101049), (507, 38865), (585, 33683), (845, 23319), (1521, 12955), (2535, 7773), (2591, 7605)]