11721860

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{283}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 26241600

約数和(自身を除く): 14519740

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 109, 190, 218, 283, 380, 436, 545, 566, 1090, 1132, 1415, 2071, 2180, 2830, 4142, 5377, 5660, 8284, 10355, 10754, 20710, 21508, 26885, 30847, 41420, 53770, 61694, 107540, 123388, 154235, 308470, 586093, 616940, 1172186, 2344372, 2930465, 5860930, 11721860]

約数ペア:

[(1, 11721860), (2, 5860930), (4, 2930465), (5, 2344372), (10, 1172186), (19, 616940), (20, 586093), (38, 308470), (76, 154235), (95, 123388), (109, 107540), (190, 61694), (218, 53770), (283, 41420), (380, 30847), (436, 26885), (545, 21508), (566, 20710), (1090, 10754), (1132, 10355), (1415, 8284), (2071, 5660), (2180, 5377), (2830, 4142)]