28489293

素因数分解:

$3^3\times 7^1\times {\mathrm{307}}^1\times {\mathrm{491}}^1$

素因数の和:814

約数の個数: 32

約数和(自身を含む): 48491520

約数和(自身を除く): 20002227

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 307, 491, 921, 1473, 2149, 2763, 3437, 4419, 6447, 8289, 10311, 13257, 19341, 30933, 58023, 92799, 150737, 452211, 1055159, 1356633, 3165477, 4069899, 9496431, 28489293]

約数ペア:

[(1, 28489293), (3, 9496431), (7, 4069899), (9, 3165477), (21, 1356633), (27, 1055159), (63, 452211), (189, 150737), (307, 92799), (491, 58023), (921, 30933), (1473, 19341), (2149, 13257), (2763, 10311), (3437, 8289), (4419, 6447)]