18009791991

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{109367}}^1$

素因数の和:109505

約数の個数: 40

約数和(自身を含む): 28584420480

約数和(自身を除く): 10574628489

約数列:

[1, 3, 9, 19, 27, 57, 81, 107, 171, 321, 513, 963, 1539, 2033, 2889, 6099, 8667, 18297, 54891, 109367, 164673, 328101, 984303, 2077973, 2952909, 6233919, 8858727, 11702269, 18701757, 35106807, 56105271, 105320421, 168315813, 222343111, 315961263, 667029333, 947883789, 2001087999, 6003263997, 18009791991]

約数ペア:

[(1, 18009791991), (3, 6003263997), (9, 2001087999), (19, 947883789), (27, 667029333), (57, 315961263), (81, 222343111), (107, 168315813), (171, 105320421), (321, 56105271), (513, 35106807), (963, 18701757), (1539, 11702269), (2033, 8858727), (2889, 6233919), (6099, 2952909), (8667, 2077973), (18297, 984303), (54891, 328101), (109367, 164673)]