81440518

素因数分解:

$2^1\times {\mathrm{89}}^1\times {\mathrm{449}}^1\times {\mathrm{1019}}^1$

素因数の和:1559

約数の個数: 16

約数和(自身を含む): 123930000

約数和(自身を除く): 42489482

約数列:

[1, 2, 89, 178, 449, 898, 1019, 2038, 39961, 79922, 90691, 181382, 457531, 915062, 40720259, 81440518]

約数ペア:

[(1, 81440518), (2, 40720259), (89, 915062), (178, 457531), (449, 181382), (898, 90691), (1019, 79922), (2038, 39961)]