20613681

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{823}}^1$

素因数の和:874

約数の個数: 36

約数和(自身を含む): 34192704

約数和(自身を除く): 13579023

約数列:

[1, 3, 9, 11, 23, 33, 69, 99, 121, 207, 253, 363, 759, 823, 1089, 2277, 2469, 2783, 7407, 8349, 9053, 18929, 25047, 27159, 56787, 81477, 99583, 170361, 208219, 298749, 624657, 896247, 1873971, 2290409, 6871227, 20613681]

約数ペア:

[(1, 20613681), (3, 6871227), (9, 2290409), (11, 1873971), (23, 896247), (33, 624657), (69, 298749), (99, 208219), (121, 170361), (207, 99583), (253, 81477), (363, 56787), (759, 27159), (823, 25047), (1089, 18929), (2277, 9053), (2469, 8349), (2783, 7407)]