21120095

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{4271}}^1$

素因数の和:4342

約数の個数: 16

約数和(自身を含む): 27067392

約数和(自身を除く): 5947297

約数列:

[1, 5, 23, 43, 115, 215, 989, 4271, 4945, 21355, 98233, 183653, 491165, 918265, 4224019, 21120095]

約数ペア:

[(1, 21120095), (5, 4224019), (23, 918265), (43, 491165), (115, 183653), (215, 98233), (989, 21355), (4271, 4945)]