19902140

素因数分解:

$2^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{2819}}^1$

素因数の和:3181

約数の個数: 24

約数和(自身を含む): 41927760

約数和(自身を除く): 22025620

約数列:

[1, 2, 4, 5, 10, 20, 353, 706, 1412, 1765, 2819, 3530, 5638, 7060, 11276, 14095, 28190, 56380, 995107, 1990214, 3980428, 4975535, 9951070, 19902140]

約数ペア:

[(1, 19902140), (2, 9951070), (4, 4975535), (5, 3980428), (10, 1990214), (20, 995107), (353, 56380), (706, 28190), (1412, 14095), (1765, 11276), (2819, 7060), (3530, 5638)]