81889821

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{30431}}^1$

素因数の和:30473

約数の個数: 24

約数和(自身を含む): 132926976

約数和(自身を除く): 51037155

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 207, 299, 897, 2691, 30431, 91293, 273879, 395603, 699913, 1186809, 2099739, 3560427, 6299217, 9098869, 27296607, 81889821]

約数ペア:

[(1, 81889821), (3, 27296607), (9, 9098869), (13, 6299217), (23, 3560427), (39, 2099739), (69, 1186809), (117, 699913), (207, 395603), (299, 273879), (897, 91293), (2691, 30431)]