257480937

素因数分解:

$3^4\times 7^2\times {\mathrm{29}}^1\times {\mathrm{2237}}^1$

素因数の和:2292

約数の個数: 60

約数和(自身を含む): 463064580

約数和(自身を除く): 205583643

約数列:

[1, 3, 7, 9, 21, 27, 29, 49, 63, 81, 87, 147, 189, 203, 261, 441, 567, 609, 783, 1323, 1421, 1827, 2237, 2349, 3969, 4263, 5481, 6711, 12789, 15659, 16443, 20133, 38367, 46977, 60399, 64873, 109613, 115101, 140931, 181197, 194619, 328839, 422793, 454111, 583857, 986517, 1268379, 1362333, 1751571, 2959551, 3178777, 4086999, 5254713, 8878653, 9536331, 12260997, 28608993, 36782991, 85826979, 257480937]

約数ペア:

[(1, 257480937), (3, 85826979), (7, 36782991), (9, 28608993), (21, 12260997), (27, 9536331), (29, 8878653), (49, 5254713), (63, 4086999), (81, 3178777), (87, 2959551), (147, 1751571), (189, 1362333), (203, 1268379), (261, 986517), (441, 583857), (567, 454111), (609, 422793), (783, 328839), (1323, 194619), (1421, 181197), (1827, 140931), (2237, 115101), (2349, 109613), (3969, 64873), (4263, 60399), (5481, 46977), (6711, 38367), (12789, 20133), (15659, 16443)]