28156989

素因数分解:

$3^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{12301}}^1$

素因数の和:12420

約数の個数: 16

約数和(自身を含む): 43303040

約数和(自身を除く): 15146051

約数列:

[1, 3, 7, 21, 109, 327, 763, 2289, 12301, 36903, 86107, 258321, 1340809, 4022427, 9385663, 28156989]

約数ペア:

[(1, 28156989), (3, 9385663), (7, 4022427), (21, 1340809), (109, 258321), (327, 86107), (763, 36903), (2289, 12301)]