19849617

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:235

約数の個数: 40

約数和(自身を含む): 31305120

約数和(自身を除く): 11455503

約数列:

[1, 3, 9, 27, 41, 43, 81, 123, 129, 139, 369, 387, 417, 1107, 1161, 1251, 1763, 3321, 3483, 3753, 5289, 5699, 5977, 11259, 15867, 17097, 17931, 47601, 51291, 53793, 142803, 153873, 161379, 245057, 461619, 484137, 735171, 2205513, 6616539, 19849617]

約数ペア:

[(1, 19849617), (3, 6616539), (9, 2205513), (27, 735171), (41, 484137), (43, 461619), (81, 245057), (123, 161379), (129, 153873), (139, 142803), (369, 53793), (387, 51291), (417, 47601), (1107, 17931), (1161, 17097), (1251, 15867), (1763, 11259), (3321, 5977), (3483, 5699), (3753, 5289)]