81342745

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1\times {\mathrm{193}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 109509120

約数和(自身を除く): 28166375

約数列:

[1, 5, 11, 55, 79, 97, 193, 395, 485, 869, 965, 1067, 2123, 4345, 5335, 7663, 10615, 15247, 18721, 38315, 76235, 84293, 93605, 167717, 205931, 421465, 838585, 1029655, 1478959, 7394795, 16268549, 81342745]

約数ペア:

[(1, 81342745), (5, 16268549), (11, 7394795), (55, 1478959), (79, 1029655), (97, 838585), (193, 421465), (395, 205931), (485, 167717), (869, 93605), (965, 84293), (1067, 76235), (2123, 38315), (4345, 18721), (5335, 15247), (7663, 10615)]