20669188

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{283}}^1$

素因数の和:368

約数の個数: 36

約数和(自身を含む): 39481680

約数和(自身を除く): 18812492

約数列:

[1, 2, 4, 19, 31, 38, 62, 76, 124, 283, 566, 589, 961, 1132, 1178, 1922, 2356, 3844, 5377, 8773, 10754, 17546, 18259, 21508, 35092, 36518, 73036, 166687, 271963, 333374, 543926, 666748, 1087852, 5167297, 10334594, 20669188]

約数ペア:

[(1, 20669188), (2, 10334594), (4, 5167297), (19, 1087852), (31, 666748), (38, 543926), (62, 333374), (76, 271963), (124, 166687), (283, 73036), (566, 36518), (589, 35092), (961, 21508), (1132, 18259), (1178, 17546), (1922, 10754), (2356, 8773), (3844, 5377)]