19937787

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{313}}^1\times {\mathrm{1249}}^1$

素因数の和:1582

約数の個数: 16

約数和(自身を含む): 28260000

約数和(自身を除く): 8322213

約数列:

[1, 3, 17, 51, 313, 939, 1249, 3747, 5321, 15963, 21233, 63699, 390937, 1172811, 6645929, 19937787]

約数ペア:

[(1, 19937787), (3, 6645929), (17, 1172811), (51, 390937), (313, 63699), (939, 21233), (1249, 15963), (3747, 5321)]