90190910

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{479}}^1\times {\mathrm{991}}^1$

素因数の和:1496

約数の個数: 32

約数和(自身を含む): 171417600

約数和(自身を除く): 81226690

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 479, 958, 991, 1982, 2395, 4790, 4955, 9101, 9910, 18202, 18829, 37658, 45505, 91010, 94145, 188290, 474689, 949378, 2373445, 4746890, 9019091, 18038182, 45095455, 90190910]

約数ペア:

[(1, 90190910), (2, 45095455), (5, 18038182), (10, 9019091), (19, 4746890), (38, 2373445), (95, 949378), (190, 474689), (479, 188290), (958, 94145), (991, 91010), (1982, 45505), (2395, 37658), (4790, 18829), (4955, 18202), (9101, 9910)]