20812888

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{191}}^1\times {\mathrm{257}}^1$

素因数の和:507

約数の個数: 32

約数和(自身を含む): 40124160

約数和(自身を除く): 19311272

約数列:

[1, 2, 4, 8, 53, 106, 191, 212, 257, 382, 424, 514, 764, 1028, 1528, 2056, 10123, 13621, 20246, 27242, 40492, 49087, 54484, 80984, 98174, 108968, 196348, 392696, 2601611, 5203222, 10406444, 20812888]

約数ペア:

[(1, 20812888), (2, 10406444), (4, 5203222), (8, 2601611), (53, 392696), (106, 196348), (191, 108968), (212, 98174), (257, 80984), (382, 54484), (424, 49087), (514, 40492), (764, 27242), (1028, 20246), (1528, 13621), (2056, 10123)]