19888660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{90403}}^1$

素因数の和:90423

約数の個数: 24

約数和(自身を含む): 45563616

約数和(自身を除く): 25674956

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 90403, 180806, 361612, 452015, 904030, 994433, 1808060, 1988866, 3977732, 4972165, 9944330, 19888660]

約数ペア:

[(1, 19888660), (2, 9944330), (4, 4972165), (5, 3977732), (10, 1988866), (11, 1808060), (20, 994433), (22, 904030), (44, 452015), (55, 361612), (110, 180806), (220, 90403)]