19810818

素因数分解:

$2^1\times 3^5\times {\mathrm{40763}}^1$

素因数の和:40780

約数の個数: 24

約数和(自身を含む): 44514288

約数和(自身を除く): 24703470

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 243, 486, 40763, 81526, 122289, 244578, 366867, 733734, 1100601, 2201202, 3301803, 6603606, 9905409, 19810818]

約数ペア:

[(1, 19810818), (2, 9905409), (3, 6603606), (6, 3301803), (9, 2201202), (18, 1100601), (27, 733734), (54, 366867), (81, 244578), (162, 122289), (243, 81526), (486, 40763)]