19967265

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{607}}^1$

素因数の和:678

約数の個数: 48

約数和(自身を含む): 37559808

約数和(自身を除く): 17592543

約数列:

[1, 3, 5, 9, 15, 17, 43, 45, 51, 85, 129, 153, 215, 255, 387, 607, 645, 731, 765, 1821, 1935, 2193, 3035, 3655, 5463, 6579, 9105, 10319, 10965, 26101, 27315, 30957, 32895, 51595, 78303, 92871, 130505, 154785, 234909, 391515, 443717, 464355, 1174545, 1331151, 2218585, 3993453, 6655755, 19967265]

約数ペア:

[(1, 19967265), (3, 6655755), (5, 3993453), (9, 2218585), (15, 1331151), (17, 1174545), (43, 464355), (45, 443717), (51, 391515), (85, 234909), (129, 154785), (153, 130505), (215, 92871), (255, 78303), (387, 51595), (607, 32895), (645, 30957), (731, 27315), (765, 26101), (1821, 10965), (1935, 10319), (2193, 9105), (3035, 6579), (3655, 5463)]