81430876

素因数分解:

$2^2\times {\mathrm{127}}^1\times {\mathrm{157}}^1\times {\mathrm{1021}}^1$

素因数の和:1309

約数の個数: 24

約数和(自身を含む): 144682496

約数和(自身を除く): 63251620

約数列:

[1, 2, 4, 127, 157, 254, 314, 508, 628, 1021, 2042, 4084, 19939, 39878, 79756, 129667, 160297, 259334, 320594, 518668, 641188, 20357719, 40715438, 81430876]

約数ペア:

[(1, 81430876), (2, 40715438), (4, 20357719), (127, 641188), (157, 518668), (254, 320594), (314, 259334), (508, 160297), (628, 129667), (1021, 79756), (2042, 39878), (4084, 19939)]