81400825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{173}}^1$

素因数の和:282

約数の個数: 48

約数和(自身を含む): 116510400

約数和(自身を除く): 35109575

約数列:

[1, 5, 11, 25, 29, 55, 59, 145, 173, 275, 295, 319, 649, 725, 865, 1475, 1595, 1711, 1903, 3245, 4325, 5017, 7975, 8555, 9515, 10207, 16225, 18821, 25085, 42775, 47575, 51035, 55187, 94105, 112277, 125425, 255175, 275935, 296003, 470525, 561385, 1379675, 1480015, 2806925, 3256033, 7400075, 16280165, 81400825]

約数ペア:

[(1, 81400825), (5, 16280165), (11, 7400075), (25, 3256033), (29, 2806925), (55, 1480015), (59, 1379675), (145, 561385), (173, 470525), (275, 296003), (295, 275935), (319, 255175), (649, 125425), (725, 112277), (865, 94105), (1475, 55187), (1595, 51035), (1711, 47575), (1903, 42775), (3245, 25085), (4325, 18821), (5017, 16225), (7975, 10207), (8555, 9515)]