81211689

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{293}}^1$

素因数の和:438

約数の個数: 48

約数和(自身を含む): 133555968

約数和(自身を除く): 52344279

約数列:

[1, 3, 9, 13, 23, 39, 69, 103, 117, 207, 293, 299, 309, 879, 897, 927, 1339, 2369, 2637, 2691, 3809, 4017, 6739, 7107, 11427, 12051, 20217, 21321, 30179, 30797, 34281, 60651, 87607, 90537, 92391, 262821, 271611, 277173, 392327, 694117, 788463, 1176981, 2082351, 3530943, 6247053, 9023521, 27070563, 81211689]

約数ペア:

[(1, 81211689), (3, 27070563), (9, 9023521), (13, 6247053), (23, 3530943), (39, 2082351), (69, 1176981), (103, 788463), (117, 694117), (207, 392327), (293, 277173), (299, 271611), (309, 262821), (879, 92391), (897, 90537), (927, 87607), (1339, 60651), (2369, 34281), (2637, 30797), (2691, 30179), (3809, 21321), (4017, 20217), (6739, 12051), (7107, 11427)]