18478449

素因数分解:

$3^5\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 31309824

約数和(自身を除く): 12831375

約数列:

[1, 3, 9, 11, 27, 31, 33, 81, 93, 99, 223, 243, 279, 297, 341, 669, 837, 891, 1023, 2007, 2453, 2511, 2673, 3069, 6021, 6913, 7359, 7533, 9207, 18063, 20739, 22077, 27621, 54189, 62217, 66231, 76043, 82863, 186651, 198693, 228129, 559953, 596079, 684387, 1679859, 2053161, 6159483, 18478449]

約数ペア:

[(1, 18478449), (3, 6159483), (9, 2053161), (11, 1679859), (27, 684387), (31, 596079), (33, 559953), (81, 228129), (93, 198693), (99, 186651), (223, 82863), (243, 76043), (279, 66231), (297, 62217), (341, 54189), (669, 27621), (837, 22077), (891, 20739), (1023, 18063), (2007, 9207), (2453, 7533), (2511, 7359), (2673, 6913), (3069, 6021)]