2789721

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:155

約数の個数: 40

約数和(自身を含む): 4739328

約数和(自身を除く): 1949607

約数列:

[1, 3, 9, 11, 27, 31, 33, 81, 93, 99, 101, 279, 297, 303, 341, 837, 891, 909, 1023, 1111, 2511, 2727, 3069, 3131, 3333, 8181, 9207, 9393, 9999, 27621, 28179, 29997, 34441, 84537, 89991, 103323, 253611, 309969, 929907, 2789721]

約数ペア:

[(1, 2789721), (3, 929907), (9, 309969), (11, 253611), (27, 103323), (31, 89991), (33, 84537), (81, 34441), (93, 29997), (99, 28179), (101, 27621), (279, 9999), (297, 9393), (303, 9207), (341, 8181), (837, 3333), (891, 3131), (909, 3069), (1023, 2727), (1111, 2511)]