28787556

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{881}}^1$

素因数の和:1284

約数の個数: 48

約数和(自身を含む): 77051520

約数和(自身を除く): 48263964

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 389, 778, 881, 1167, 1556, 1762, 2334, 2643, 2723, 3524, 4668, 5286, 5446, 6167, 8169, 10572, 10892, 12334, 16338, 18501, 24668, 32676, 37002, 74004, 342709, 685418, 1028127, 1370836, 2056254, 2398963, 4112508, 4797926, 7196889, 9595852, 14393778, 28787556]

約数ペア:

[(1, 28787556), (2, 14393778), (3, 9595852), (4, 7196889), (6, 4797926), (7, 4112508), (12, 2398963), (14, 2056254), (21, 1370836), (28, 1028127), (42, 685418), (84, 342709), (389, 74004), (778, 37002), (881, 32676), (1167, 24668), (1556, 18501), (1762, 16338), (2334, 12334), (2643, 10892), (2723, 10572), (3524, 8169), (4668, 6167), (5286, 5446)]