18208521

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{647}}^1$

素因数の和:765

約数の個数: 24

約数和(自身を含む): 27293760

約数和(自身を除く): 9085239

約数列:

[1, 3, 9, 53, 59, 159, 177, 477, 531, 647, 1941, 3127, 5823, 9381, 28143, 34291, 38173, 102873, 114519, 308619, 343557, 2023169, 6069507, 18208521]

約数ペア:

[(1, 18208521), (3, 6069507), (9, 2023169), (53, 343557), (59, 308619), (159, 114519), (177, 102873), (477, 38173), (531, 34291), (647, 28143), (1941, 9381), (3127, 5823)]