28402569

素因数分解:

$3^{10}\times {\mathrm{13}}^1\times {\mathrm{37}}^1$

素因数の和:80

約数の個数: 44

約数和(自身を含む): 47120836

約数和(自身を除く): 18718267

約数列:

[1, 3, 9, 13, 27, 37, 39, 81, 111, 117, 243, 333, 351, 481, 729, 999, 1053, 1443, 2187, 2997, 3159, 4329, 6561, 8991, 9477, 12987, 19683, 26973, 28431, 38961, 59049, 80919, 85293, 116883, 242757, 255879, 350649, 728271, 767637, 1051947, 2184813, 3155841, 9467523, 28402569]

約数ペア:

[(1, 28402569), (3, 9467523), (9, 3155841), (13, 2184813), (27, 1051947), (37, 767637), (39, 728271), (81, 350649), (111, 255879), (117, 242757), (243, 116883), (333, 85293), (351, 80919), (481, 59049), (729, 38961), (999, 28431), (1053, 26973), (1443, 19683), (2187, 12987), (2997, 9477), (3159, 8991), (4329, 6561)]