80181981

素因数分解:

$3^8\times {\mathrm{11}}^2\times {\mathrm{101}}^1$

素因数の和:147

約数の個数: 54

約数和(自身を含む): 133503006

約数和(自身を除く): 53321025

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 101, 121, 243, 297, 303, 363, 729, 891, 909, 1089, 1111, 2187, 2673, 2727, 3267, 3333, 6561, 8019, 8181, 9801, 9999, 12221, 24057, 24543, 29403, 29997, 36663, 72171, 73629, 88209, 89991, 109989, 220887, 264627, 269973, 329967, 662661, 793881, 809919, 989901, 2429757, 2969703, 7289271, 8909109, 26727327, 80181981]

約数ペア:

[(1, 80181981), (3, 26727327), (9, 8909109), (11, 7289271), (27, 2969703), (33, 2429757), (81, 989901), (99, 809919), (101, 793881), (121, 662661), (243, 329967), (297, 269973), (303, 264627), (363, 220887), (729, 109989), (891, 89991), (909, 88209), (1089, 73629), (1111, 72171), (2187, 36663), (2673, 29997), (2727, 29403), (3267, 24543), (3333, 24057), (6561, 12221), (8019, 9999), (8181, 9801)]