256580703

素因数分解:

$3^4\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{397}}^1$

素因数の和:589

約数の個数: 40

約数和(自身を含む): 392969280

約数和(自身を除く): 136388577

約数列:

[1, 3, 9, 27, 79, 81, 101, 237, 303, 397, 711, 909, 1191, 2133, 2727, 3573, 6399, 7979, 8181, 10719, 23937, 31363, 32157, 40097, 71811, 94089, 120291, 215433, 282267, 360873, 646299, 846801, 1082619, 2540403, 3167663, 3247857, 9502989, 28508967, 85526901, 256580703]

約数ペア:

[(1, 256580703), (3, 85526901), (9, 28508967), (27, 9502989), (79, 3247857), (81, 3167663), (101, 2540403), (237, 1082619), (303, 846801), (397, 646299), (711, 360873), (909, 282267), (1191, 215433), (2133, 120291), (2727, 94089), (3573, 71811), (6399, 40097), (7979, 32157), (8181, 31363), (10719, 23937)]