20688129

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1$

素因数の和:168

約数の個数: 80

約数和(自身を含む): 40144896

約数和(自身を除く): 19456767

約数列:

[1, 3, 7, 9, 11, 21, 27, 31, 33, 63, 77, 81, 93, 99, 107, 189, 217, 231, 279, 297, 321, 341, 567, 651, 693, 749, 837, 891, 963, 1023, 1177, 1953, 2079, 2247, 2387, 2511, 2889, 3069, 3317, 3531, 5859, 6237, 6741, 7161, 8239, 8667, 9207, 9951, 10593, 17577, 20223, 21483, 23219, 24717, 27621, 29853, 31779, 36487, 60669, 64449, 69657, 74151, 89559, 95337, 109461, 193347, 208971, 222453, 255409, 268677, 328383, 626913, 667359, 766227, 985149, 1880739, 2298681, 2955447, 6896043, 20688129]

約数ペア:

[(1, 20688129), (3, 6896043), (7, 2955447), (9, 2298681), (11, 1880739), (21, 985149), (27, 766227), (31, 667359), (33, 626913), (63, 328383), (77, 268677), (81, 255409), (93, 222453), (99, 208971), (107, 193347), (189, 109461), (217, 95337), (231, 89559), (279, 74151), (297, 69657), (321, 64449), (341, 60669), (567, 36487), (651, 31779), (693, 29853), (749, 27621), (837, 24717), (891, 23219), (963, 21483), (1023, 20223), (1177, 17577), (1953, 10593), (2079, 9951), (2247, 9207), (2387, 8667), (2511, 8239), (2889, 7161), (3069, 6741), (3317, 6237), (3531, 5859)]