18809901

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{227}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 31868928

約数和(自身を除く): 13059027

約数列:

[1, 3, 9, 11, 27, 31, 33, 81, 93, 99, 227, 243, 279, 297, 341, 681, 837, 891, 1023, 2043, 2497, 2511, 2673, 3069, 6129, 7037, 7491, 7533, 9207, 18387, 21111, 22473, 27621, 55161, 63333, 67419, 77407, 82863, 189999, 202257, 232221, 569997, 606771, 696663, 1709991, 2089989, 6269967, 18809901]

約数ペア:

[(1, 18809901), (3, 6269967), (9, 2089989), (11, 1709991), (27, 696663), (31, 606771), (33, 569997), (81, 232221), (93, 202257), (99, 189999), (227, 82863), (243, 77407), (279, 67419), (297, 63333), (341, 55161), (681, 27621), (837, 22473), (891, 21111), (1023, 18387), (2043, 9207), (2497, 7533), (2511, 7491), (2673, 7037), (3069, 6129)]