20164820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{77557}}^1$

素因数の和:77579

約数の個数: 24

約数和(自身を含む): 45604104

約数和(自身を除く): 25439284

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 77557, 155114, 310228, 387785, 775570, 1008241, 1551140, 2016482, 4032964, 5041205, 10082410, 20164820]

約数ペア:

[(1, 20164820), (2, 10082410), (4, 5041205), (5, 4032964), (10, 2016482), (13, 1551140), (20, 1008241), (26, 775570), (52, 387785), (65, 310228), (130, 155114), (260, 77557)]