20777355

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1279}}^1$

素因数の和:1328

約数の個数: 36

約数和(自身を含む): 38039040

約数和(自身を除く): 17261685

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 361, 855, 1083, 1279, 1805, 3249, 3837, 5415, 6395, 11511, 16245, 19185, 24301, 57555, 72903, 121505, 218709, 364515, 461719, 1093545, 1385157, 2308595, 4155471, 6925785, 20777355]

約数ペア:

[(1, 20777355), (3, 6925785), (5, 4155471), (9, 2308595), (15, 1385157), (19, 1093545), (45, 461719), (57, 364515), (95, 218709), (171, 121505), (285, 72903), (361, 57555), (855, 24301), (1083, 19185), (1279, 16245), (1805, 11511), (3249, 6395), (3837, 5415)]