81302907

素因数分解:

$3^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{173}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 133297920

約数和(自身を除く): 51995013

約数列:

[1, 3, 7, 21, 23, 49, 69, 139, 147, 161, 173, 417, 483, 519, 973, 1127, 1211, 2919, 3197, 3381, 3633, 3979, 6811, 8477, 9591, 11937, 20433, 22379, 24047, 25431, 27853, 67137, 72141, 83559, 156653, 168329, 194971, 469959, 504987, 553081, 584913, 1178303, 1659243, 3534909, 3871567, 11614701, 27100969, 81302907]

約数ペア:

[(1, 81302907), (3, 27100969), (7, 11614701), (21, 3871567), (23, 3534909), (49, 1659243), (69, 1178303), (139, 584913), (147, 553081), (161, 504987), (173, 469959), (417, 194971), (483, 168329), (519, 156653), (973, 83559), (1127, 72141), (1211, 67137), (2919, 27853), (3197, 25431), (3381, 24047), (3633, 22379), (3979, 20433), (6811, 11937), (8477, 9591)]