20102180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1033}}^1$

素因数の和:1188

約数の個数: 48

約数和(自身を含む): 48639360

約数和(自身を除く): 28537180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1033, 1390, 1946, 2066, 2780, 3892, 4132, 4865, 5165, 7231, 9730, 10330, 14462, 19460, 20660, 28924, 36155, 72310, 143587, 144620, 287174, 574348, 717935, 1005109, 1435870, 2010218, 2871740, 4020436, 5025545, 10051090, 20102180]

約数ペア:

[(1, 20102180), (2, 10051090), (4, 5025545), (5, 4020436), (7, 2871740), (10, 2010218), (14, 1435870), (20, 1005109), (28, 717935), (35, 574348), (70, 287174), (139, 144620), (140, 143587), (278, 72310), (556, 36155), (695, 28924), (973, 20660), (1033, 19460), (1390, 14462), (1946, 10330), (2066, 9730), (2780, 7231), (3892, 5165), (4132, 4865)]