64801820

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{33403}}^1$

素因数の和:33509

約数の個数: 24

約数和(自身を含む): 137490864

約数和(自身を除く): 72689044

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 33403, 66806, 133612, 167015, 334030, 668060, 3240091, 6480182, 12960364, 16200455, 32400910, 64801820]

約数ペア:

[(1, 64801820), (2, 32400910), (4, 16200455), (5, 12960364), (10, 6480182), (20, 3240091), (97, 668060), (194, 334030), (388, 167015), (485, 133612), (970, 66806), (1940, 33403)]