21792969

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{263}}^1$

素因数の和:320

約数の個数: 48

約数和(自身を含む): 36900864

約数和(自身を除く): 15107895

約数列:

[1, 3, 9, 11, 27, 31, 33, 81, 93, 99, 243, 263, 279, 297, 341, 789, 837, 891, 1023, 2367, 2511, 2673, 2893, 3069, 7101, 7533, 8153, 8679, 9207, 21303, 24459, 26037, 27621, 63909, 73377, 78111, 82863, 89683, 220131, 234333, 269049, 660393, 702999, 807147, 1981179, 2421441, 7264323, 21792969]

約数ペア:

[(1, 21792969), (3, 7264323), (9, 2421441), (11, 1981179), (27, 807147), (31, 702999), (33, 660393), (81, 269049), (93, 234333), (99, 220131), (243, 89683), (263, 82863), (279, 78111), (297, 73377), (341, 63909), (789, 27621), (837, 26037), (891, 24459), (1023, 21303), (2367, 9207), (2511, 8679), (2673, 8153), (2893, 7533), (3069, 7101)]