18972890

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{44123}}^1$

素因数の和:44173

約数の個数: 16

約数和(自身を含む): 34946208

約数和(自身を除く): 15973318

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 44123, 88246, 220615, 441230, 1897289, 3794578, 9486445, 18972890]

約数ペア:

[(1, 18972890), (2, 9486445), (5, 3794578), (10, 1897289), (43, 441230), (86, 220615), (215, 88246), (430, 44123)]