20088940

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{1567}}^1$

素因数の和:2217

約数の個数: 24

約数和(自身を含む): 42279552

約数和(自身を除く): 22190612

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 1567, 2564, 3134, 3205, 6268, 6410, 7835, 12820, 15670, 31340, 1004447, 2008894, 4017788, 5022235, 10044470, 20088940]

約数ペア:

[(1, 20088940), (2, 10044470), (4, 5022235), (5, 4017788), (10, 2008894), (20, 1004447), (641, 31340), (1282, 15670), (1567, 12820), (2564, 7835), (3134, 6410), (3205, 6268)]