20120681721

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{772061}}^1$

素因数の和:772161

約数の個数: 32

約数和(自身を含む): 32908370688

約数和(自身を除く): 12787688967

約数列:

[1, 3, 7, 17, 21, 51, 73, 119, 219, 357, 511, 1241, 1533, 3723, 8687, 26061, 772061, 2316183, 5404427, 13125037, 16213281, 39375111, 56360453, 91875259, 169081359, 275625777, 394523171, 958127701, 1183569513, 2874383103, 6706893907, 20120681721]

約数ペア:

[(1, 20120681721), (3, 6706893907), (7, 2874383103), (17, 1183569513), (21, 958127701), (51, 394523171), (73, 275625777), (119, 169081359), (219, 91875259), (357, 56360453), (511, 39375111), (1241, 16213281), (1533, 13125037), (3723, 5404427), (8687, 2316183), (26061, 772061)]