81507951

素因数分解:

$3^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4957}}^1$

素因数の和:5005

約数の個数: 40

約数和(自身を含む): 143980320

約数和(自身を除く): 62472369

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 81, 87, 189, 203, 261, 567, 609, 783, 1827, 2349, 4957, 5481, 14871, 16443, 34699, 44613, 104097, 133839, 143753, 312291, 401517, 431259, 936873, 1006271, 1293777, 2810619, 3018813, 3881331, 9056439, 11643993, 27169317, 81507951]

約数ペア:

[(1, 81507951), (3, 27169317), (7, 11643993), (9, 9056439), (21, 3881331), (27, 3018813), (29, 2810619), (63, 1293777), (81, 1006271), (87, 936873), (189, 431259), (203, 401517), (261, 312291), (567, 143753), (609, 133839), (783, 104097), (1827, 44613), (2349, 34699), (4957, 16443), (5481, 14871)]