389631081

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:418

約数の個数: 64

約数和(自身を含む): 648806400

約数和(自身を除く): 259175319

約数列:

[1, 3, 7, 19, 21, 47, 57, 79, 133, 141, 237, 263, 329, 399, 553, 789, 893, 987, 1501, 1659, 1841, 2679, 3713, 4503, 4997, 5523, 6251, 10507, 11139, 12361, 14991, 18753, 20777, 25991, 31521, 34979, 37083, 62331, 70547, 77973, 86527, 104937, 145439, 211641, 234859, 259581, 394763, 436317, 493829, 704577, 976519, 1184289, 1481487, 1644013, 2763341, 2929557, 4932039, 6835633, 8290023, 18553861, 20506899, 55661583, 129877027, 389631081]

約数ペア:

[(1, 389631081), (3, 129877027), (7, 55661583), (19, 20506899), (21, 18553861), (47, 8290023), (57, 6835633), (79, 4932039), (133, 2929557), (141, 2763341), (237, 1644013), (263, 1481487), (329, 1184289), (399, 976519), (553, 704577), (789, 493829), (893, 436317), (987, 394763), (1501, 259581), (1659, 234859), (1841, 211641), (2679, 145439), (3713, 104937), (4503, 86527), (4997, 77973), (5523, 70547), (6251, 62331), (10507, 37083), (11139, 34979), (12361, 31521), (14991, 25991), (18753, 20777)]