1388336780

素因数分解:

$2^2\times 5^1\times {\mathrm{69416839}}^1$

素因数の和:69416848

約数の個数: 12

約数和(自身を含む): 2915507280

約数和(自身を除く): 1527170500

約数列:

[1, 2, 4, 5, 10, 20, 69416839, 138833678, 277667356, 347084195, 694168390, 1388336780]

約数ペア:

[(1, 1388336780), (2, 694168390), (4, 347084195), (5, 277667356), (10, 138833678), (20, 69416839)]