19745505

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{11251}}^1$

素因数の和:11278

約数の個数: 32

約数和(自身を含む): 37806720

約数和(自身を除く): 18061215

約数列:

[1, 3, 5, 9, 13, 15, 27, 39, 45, 65, 117, 135, 195, 351, 585, 1755, 11251, 33753, 56255, 101259, 146263, 168765, 303777, 438789, 506295, 731315, 1316367, 1518885, 2193945, 3949101, 6581835, 19745505]

約数ペア:

[(1, 19745505), (3, 6581835), (5, 3949101), (9, 2193945), (13, 1518885), (15, 1316367), (27, 731315), (39, 506295), (45, 438789), (65, 303777), (117, 168765), (135, 146263), (195, 101259), (351, 56255), (585, 33753), (1755, 11251)]