12738800

素因数分解:

$2^4\times 5^2\times {\mathrm{31847}}^1$

素因数の和:31865

約数の個数: 30

約数和(自身を含む): 30605928

約数和(自身を除く): 17867128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 31847, 63694, 127388, 159235, 254776, 318470, 509552, 636940, 796175, 1273880, 1592350, 2547760, 3184700, 6369400, 12738800]

約数ペア:

[(1, 12738800), (2, 6369400), (4, 3184700), (5, 2547760), (8, 1592350), (10, 1273880), (16, 796175), (20, 636940), (25, 509552), (40, 318470), (50, 254776), (80, 159235), (100, 127388), (200, 63694), (400, 31847)]