19705738

素因数分解:

$2^1\times {\mathrm{13}}^2\times {\mathrm{173}}^1\times {\mathrm{337}}^1$

素因数の和:538

約数の個数: 24

約数和(自身を含む): 32287788

約数和(自身を除く): 12582050

約数列:

[1, 2, 13, 26, 169, 173, 337, 338, 346, 674, 2249, 4381, 4498, 8762, 29237, 56953, 58301, 58474, 113906, 116602, 757913, 1515826, 9852869, 19705738]

約数ペア:

[(1, 19705738), (2, 9852869), (13, 1515826), (26, 757913), (169, 116602), (173, 113906), (337, 58474), (338, 58301), (346, 56953), (674, 29237), (2249, 8762), (4381, 4498)]