78629780

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{28697}}^1$

素因数の和:28843

約数の個数: 24

約数和(自身を含む): 166333608

約数和(自身を除く): 87703828

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 28697, 57394, 114788, 143485, 286970, 573940, 3931489, 7862978, 15725956, 19657445, 39314890, 78629780]

約数ペア:

[(1, 78629780), (2, 39314890), (4, 19657445), (5, 15725956), (10, 7862978), (20, 3931489), (137, 573940), (274, 286970), (548, 143485), (685, 114788), (1370, 57394), (2740, 28697)]