12821305

素因数分解:

$5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{4637}}^1$

素因数の和:4728

約数の個数: 16

約数和(自身を含む): 17809920

約数和(自身を除く): 4988615

約数列:

[1, 5, 7, 35, 79, 395, 553, 2765, 4637, 23185, 32459, 162295, 366323, 1831615, 2564261, 12821305]

約数ペア:

[(1, 12821305), (5, 2564261), (7, 1831615), (35, 366323), (79, 162295), (395, 32459), (553, 23185), (2765, 4637)]