277777227

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{1061}}^1$

素因数の和:1228

約数の個数: 48

約数和(自身を含む): 467806752

約数和(自身を除く): 190029525

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 137, 147, 273, 411, 637, 959, 1061, 1781, 1911, 2877, 3183, 5343, 6713, 7427, 12467, 13793, 20139, 22281, 37401, 41379, 51989, 87269, 96551, 145357, 155967, 261807, 289653, 436071, 675857, 1017499, 1889641, 2027571, 3052497, 5668923, 7122493, 13227487, 21367479, 39682461, 92592409, 277777227]

約数ペア:

[(1, 277777227), (3, 92592409), (7, 39682461), (13, 21367479), (21, 13227487), (39, 7122493), (49, 5668923), (91, 3052497), (137, 2027571), (147, 1889641), (273, 1017499), (411, 675857), (637, 436071), (959, 289653), (1061, 261807), (1781, 155967), (1911, 145357), (2877, 96551), (3183, 87269), (5343, 51989), (6713, 41379), (7427, 37401), (12467, 22281), (13793, 20139)]