19886840

素因数分解:

$2^3\times 5^1\times {\mathrm{497171}}^1$

素因数の和:497182

約数の個数: 16

約数和(自身を含む): 44745480

約数和(自身を除く): 24858640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 497171, 994342, 1988684, 2485855, 3977368, 4971710, 9943420, 19886840]

約数ペア:

[(1, 19886840), (2, 9943420), (4, 4971710), (5, 3977368), (8, 2485855), (10, 1988684), (20, 994342), (40, 497171)]