18788990

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{170809}}^1$

素因数の和:170827

約数の個数: 16

約数和(自身を含む): 36894960

約数和(自身を除く): 18105970

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 170809, 341618, 854045, 1708090, 1878899, 3757798, 9394495, 18788990]

約数ペア:

[(1, 18788990), (2, 9394495), (5, 3757798), (10, 1878899), (11, 1708090), (22, 854045), (55, 341618), (110, 170809)]