1390804820

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{507593}}^1$

素因数の和:507739

約数の個数: 24

約数和(自身を含む): 2942014824

約数和(自身を除く): 1551210004

約数列:

[1, 2, 4, 5, 10, 20, 137, 274, 548, 685, 1370, 2740, 507593, 1015186, 2030372, 2537965, 5075930, 10151860, 69540241, 139080482, 278160964, 347701205, 695402410, 1390804820]

約数ペア:

[(1, 1390804820), (2, 695402410), (4, 347701205), (5, 278160964), (10, 139080482), (20, 69540241), (137, 10151860), (274, 5075930), (548, 2537965), (685, 2030372), (1370, 1015186), (2740, 507593)]