19996220

素因数分解:

$2^2\times 5^1\times {\mathrm{487}}^1\times {\mathrm{2053}}^1$

素因数の和:2549

約数の個数: 24

約数和(自身を含む): 42098784

約数和(自身を除く): 22102564

約数列:

[1, 2, 4, 5, 10, 20, 487, 974, 1948, 2053, 2435, 4106, 4870, 8212, 9740, 10265, 20530, 41060, 999811, 1999622, 3999244, 4999055, 9998110, 19996220]

約数ペア:

[(1, 19996220), (2, 9998110), (4, 4999055), (5, 3999244), (10, 1999622), (20, 999811), (487, 41060), (974, 20530), (1948, 10265), (2053, 9740), (2435, 8212), (4106, 4870)]