28004967

素因数分解:

$3^3\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{97}}^1$

素因数の和:177

約数の個数: 48

約数和(自身を含む): 45730720

約数和(自身を除く): 17725753

約数列:

[1, 3, 9, 17, 27, 37, 51, 97, 111, 153, 289, 291, 333, 459, 629, 867, 873, 999, 1649, 1887, 2601, 2619, 3589, 4947, 5661, 7803, 10693, 10767, 14841, 16983, 28033, 32079, 32301, 44523, 61013, 84099, 96237, 96903, 183039, 252297, 288711, 549117, 756891, 1037221, 1647351, 3111663, 9334989, 28004967]

約数ペア:

[(1, 28004967), (3, 9334989), (9, 3111663), (17, 1647351), (27, 1037221), (37, 756891), (51, 549117), (97, 288711), (111, 252297), (153, 183039), (289, 96903), (291, 96237), (333, 84099), (459, 61013), (629, 44523), (867, 32301), (873, 32079), (999, 28033), (1649, 16983), (1887, 14841), (2601, 10767), (2619, 10693), (3589, 7803), (4947, 5661)]