78239721

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{317}}^1$

素因数の和:430

約数の個数: 48

約数和(自身を含む): 128767104

約数和(自身を除く): 50527383

約数列:

[1, 3, 7, 21, 23, 49, 69, 73, 147, 161, 219, 317, 483, 511, 951, 1127, 1533, 1679, 2219, 3381, 3577, 5037, 6657, 7291, 10731, 11753, 15533, 21873, 23141, 35259, 46599, 51037, 69423, 82271, 153111, 161987, 246813, 357259, 485961, 532243, 1071777, 1133909, 1596729, 3401727, 3725701, 11177103, 26079907, 78239721]

約数ペア:

[(1, 78239721), (3, 26079907), (7, 11177103), (21, 3725701), (23, 3401727), (49, 1596729), (69, 1133909), (73, 1071777), (147, 532243), (161, 485961), (219, 357259), (317, 246813), (483, 161987), (511, 153111), (951, 82271), (1127, 69423), (1533, 51037), (1679, 46599), (2219, 35259), (3381, 23141), (3577, 21873), (5037, 15533), (6657, 11753), (7291, 10731)]