21386754

素因数分解:

$2^1\times 3^4\times {\mathrm{97}}^1\times {\mathrm{1361}}^1$

素因数の和:1472

約数の個数: 40

約数和(自身を含む): 48451788

約数和(自身を除く): 27065034

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 97, 162, 194, 291, 582, 873, 1361, 1746, 2619, 2722, 4083, 5238, 7857, 8166, 12249, 15714, 24498, 36747, 73494, 110241, 132017, 220482, 264034, 396051, 792102, 1188153, 2376306, 3564459, 7128918, 10693377, 21386754]

約数ペア:

[(1, 21386754), (2, 10693377), (3, 7128918), (6, 3564459), (9, 2376306), (18, 1188153), (27, 792102), (54, 396051), (81, 264034), (97, 220482), (162, 132017), (194, 110241), (291, 73494), (582, 36747), (873, 24498), (1361, 15714), (1746, 12249), (2619, 8166), (2722, 7857), (4083, 5238)]