20659617

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{131}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 34594560

約数和(自身を除く): 13934943

約数列:

[1, 3, 9, 11, 27, 33, 59, 81, 99, 131, 177, 243, 297, 393, 531, 649, 891, 1179, 1441, 1593, 1947, 2673, 3537, 4323, 4779, 5841, 7729, 10611, 12969, 14337, 17523, 23187, 31833, 38907, 52569, 69561, 85019, 116721, 157707, 208683, 255057, 350163, 626049, 765171, 1878147, 2295513, 6886539, 20659617]

約数ペア:

[(1, 20659617), (3, 6886539), (9, 2295513), (11, 1878147), (27, 765171), (33, 626049), (59, 350163), (81, 255057), (99, 208683), (131, 157707), (177, 116721), (243, 85019), (297, 69561), (393, 52569), (531, 38907), (649, 31833), (891, 23187), (1179, 17523), (1441, 14337), (1593, 12969), (1947, 10611), (2673, 7729), (3537, 5841), (4323, 4779)]