28655991

素因数分解:

$3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1$

素因数の和:245

約数の個数: 64

約数和(自身を含む): 53222400

約数和(自身を除く): 24566409

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 107, 109, 117, 189, 273, 321, 327, 351, 749, 763, 819, 963, 981, 1391, 1417, 2247, 2289, 2457, 2889, 2943, 4173, 4251, 6741, 6867, 9737, 9919, 11663, 12519, 12753, 20223, 20601, 29211, 29757, 34989, 37557, 38259, 81641, 87633, 89271, 104967, 151619, 244923, 262899, 267813, 314901, 454857, 734769, 1061333, 1364571, 2204307, 3183999, 4093713, 9551997, 28655991]

約数ペア:

[(1, 28655991), (3, 9551997), (7, 4093713), (9, 3183999), (13, 2204307), (21, 1364571), (27, 1061333), (39, 734769), (63, 454857), (91, 314901), (107, 267813), (109, 262899), (117, 244923), (189, 151619), (273, 104967), (321, 89271), (327, 87633), (351, 81641), (749, 38259), (763, 37557), (819, 34989), (963, 29757), (981, 29211), (1391, 20601), (1417, 20223), (2247, 12753), (2289, 12519), (2457, 11663), (2889, 9919), (2943, 9737), (4173, 6867), (4251, 6741)]