21395018

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1\times {\mathrm{1117}}^1$

素因数の和:1337

約数の個数: 16

約数和(自身を含む): 32855784

約数和(自身を除く): 11460766

約数列:

[1, 2, 61, 122, 157, 314, 1117, 2234, 9577, 19154, 68137, 136274, 175369, 350738, 10697509, 21395018]

約数ペア:

[(1, 21395018), (2, 10697509), (61, 350738), (122, 175369), (157, 136274), (314, 68137), (1117, 19154), (2234, 9577)]