19212580

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{6911}}^1$

素因数の和:7059

約数の個数: 24

約数和(自身を含む): 40642560

約数和(自身を除く): 21429980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 6911, 13822, 27644, 34555, 69110, 138220, 960629, 1921258, 3842516, 4803145, 9606290, 19212580]

約数ペア:

[(1, 19212580), (2, 9606290), (4, 4803145), (5, 3842516), (10, 1921258), (20, 960629), (139, 138220), (278, 69110), (556, 34555), (695, 27644), (1390, 13822), (2780, 6911)]