55180280

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{2087}}^1$

素因数の和:2759

約数の個数: 32

約数和(自身を含む): 124403040

約数和(自身を除く): 69222760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1322, 2087, 2644, 3305, 4174, 5288, 6610, 8348, 10435, 13220, 16696, 20870, 26440, 41740, 83480, 1379507, 2759014, 5518028, 6897535, 11036056, 13795070, 27590140, 55180280]

約数ペア:

[(1, 55180280), (2, 27590140), (4, 13795070), (5, 11036056), (8, 6897535), (10, 5518028), (20, 2759014), (40, 1379507), (661, 83480), (1322, 41740), (2087, 26440), (2644, 20870), (3305, 16696), (4174, 13220), (5288, 10435), (6610, 8348)]