18984959

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{3187}}^1$

素因数の和:3254

約数の個数: 16

約数和(自身を含む): 23259648

約数和(自身を除く): 4274689

約数列:

[1, 7, 23, 37, 161, 259, 851, 3187, 5957, 22309, 73301, 117919, 513107, 825433, 2712137, 18984959]

約数ペア:

[(1, 18984959), (7, 2712137), (23, 825433), (37, 513107), (161, 117919), (259, 73301), (851, 22309), (3187, 5957)]