19946619

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{269}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 36391680

約数和(自身を除く): 16445061

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 107, 231, 269, 321, 693, 749, 807, 963, 1177, 1883, 2247, 2421, 2959, 3531, 5649, 6741, 8239, 8877, 10593, 16947, 20713, 24717, 26631, 28783, 62139, 74151, 86349, 186417, 201481, 259047, 316613, 604443, 949839, 1813329, 2216291, 2849517, 6648873, 19946619]

約数ペア:

[(1, 19946619), (3, 6648873), (7, 2849517), (9, 2216291), (11, 1813329), (21, 949839), (33, 604443), (63, 316613), (77, 259047), (99, 201481), (107, 186417), (231, 86349), (269, 74151), (321, 62139), (693, 28783), (749, 26631), (807, 24717), (963, 20713), (1177, 16947), (1883, 10593), (2247, 8877), (2421, 8239), (2959, 6741), (3531, 5649)]