18511964

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{311}}^1\times {\mathrm{647}}^1$

素因数の和:985

約数の個数: 24

約数和(自身を含む): 33965568

約数和(自身を除く): 15453604

約数列:

[1, 2, 4, 23, 46, 92, 311, 622, 647, 1244, 1294, 2588, 7153, 14306, 14881, 28612, 29762, 59524, 201217, 402434, 804868, 4627991, 9255982, 18511964]

約数ペア:

[(1, 18511964), (2, 9255982), (4, 4627991), (23, 804868), (46, 402434), (92, 201217), (311, 59524), (622, 29762), (647, 28612), (1244, 14881), (1294, 14306), (2588, 7153)]