1980024740

素因数分解:

$2^2\times 5^1\times {\mathrm{1549}}^1\times {\mathrm{63913}}^1$

素因数の和:65471

約数の個数: 24

約数和(自身を含む): 4160801400

約数和(自身を除く): 2180776660

約数列:

[1, 2, 4, 5, 10, 20, 1549, 3098, 6196, 7745, 15490, 30980, 63913, 127826, 255652, 319565, 639130, 1278260, 99001237, 198002474, 396004948, 495006185, 990012370, 1980024740]

約数ペア:

[(1, 1980024740), (2, 990012370), (4, 495006185), (5, 396004948), (10, 198002474), (20, 99001237), (1549, 1278260), (3098, 639130), (6196, 319565), (7745, 255652), (15490, 127826), (30980, 63913)]