19664639

素因数分解:

${\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{401}}^1$

素因数の和:538

約数の個数: 16

約数和(自身を含む): 21708000

約数和(自身を除く): 2043361

約数列:

[1, 19, 29, 89, 401, 551, 1691, 2581, 7619, 11629, 35689, 49039, 220951, 678091, 1034981, 19664639]

約数ペア:

[(1, 19664639), (19, 1034981), (29, 678091), (89, 220951), (401, 49039), (551, 35689), (1691, 11629), (2581, 7619)]