18901690

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{17341}}^1$

素因数の和:17457

約数の個数: 16

約数和(自身を含む): 34337160

約数和(自身を除く): 15435470

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 17341, 34682, 86705, 173410, 1890169, 3780338, 9450845, 18901690]

約数ペア:

[(1, 18901690), (2, 9450845), (5, 3780338), (10, 1890169), (109, 173410), (218, 86705), (545, 34682), (1090, 17341)]