55208020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2837}}^1$

素因数の和:2992

約数の個数: 48

約数和(自身を含む): 133499520

約数和(自身を除く): 78291500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1946, 2780, 2837, 3892, 4865, 5674, 9730, 11348, 14185, 19460, 19859, 28370, 39718, 56740, 79436, 99295, 198590, 394343, 397180, 788686, 1577372, 1971715, 2760401, 3943430, 5520802, 7886860, 11041604, 13802005, 27604010, 55208020]

約数ペア:

[(1, 55208020), (2, 27604010), (4, 13802005), (5, 11041604), (7, 7886860), (10, 5520802), (14, 3943430), (20, 2760401), (28, 1971715), (35, 1577372), (70, 788686), (139, 397180), (140, 394343), (278, 198590), (556, 99295), (695, 79436), (973, 56740), (1390, 39718), (1946, 28370), (2780, 19859), (2837, 19460), (3892, 14185), (4865, 11348), (5674, 9730)]