2178740

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2657}}^1$

素因数の和:2707

約数の個数: 24

約数和(自身を含む): 4688712

約数和(自身を除く): 2509972

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 2657, 5314, 10628, 13285, 26570, 53140, 108937, 217874, 435748, 544685, 1089370, 2178740]

約数ペア:

[(1, 2178740), (2, 1089370), (4, 544685), (5, 435748), (10, 217874), (20, 108937), (41, 53140), (82, 26570), (164, 13285), (205, 10628), (410, 5314), (820, 2657)]