81419855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{173}}^1\times {\mathrm{199}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 110246400

約数和(自身を除く): 28826545

約数列:

[1, 5, 11, 43, 55, 173, 199, 215, 473, 865, 995, 1903, 2189, 2365, 7439, 8557, 9515, 10945, 34427, 37195, 42785, 81829, 94127, 172135, 378697, 409145, 470635, 1480361, 1893485, 7401805, 16283971, 81419855]

約数ペア:

[(1, 81419855), (5, 16283971), (11, 7401805), (43, 1893485), (55, 1480361), (173, 470635), (199, 409145), (215, 378697), (473, 172135), (865, 94127), (995, 81829), (1903, 42785), (2189, 37195), (2365, 34427), (7439, 10945), (8557, 9515)]