81975531

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{173}}^2$

素因数の和:443

約数の個数: 24

約数和(自身を含む): 121375296

約数和(自身を除く): 39399765

約数列:

[1, 3, 11, 33, 83, 173, 249, 519, 913, 1903, 2739, 5709, 14359, 29929, 43077, 89787, 157949, 329219, 473847, 987657, 2484107, 7452321, 27325177, 81975531]

約数ペア:

[(1, 81975531), (3, 27325177), (11, 7452321), (33, 2484107), (83, 987657), (173, 473847), (249, 329219), (519, 157949), (913, 89787), (1903, 43077), (2739, 29929), (5709, 14359)]