12820885

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{33301}}^1$

素因数の和:33324

約数の個数: 16

約数和(自身を含む): 19181952

約数和(自身を除く): 6361067

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 33301, 166505, 233107, 366311, 1165535, 1831555, 2564177, 12820885]

約数ペア:

[(1, 12820885), (5, 2564177), (7, 1831555), (11, 1165535), (35, 366311), (55, 233107), (77, 166505), (385, 33301)]