21980426

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{27271}}^1$

素因数の和:27317

約数の個数: 16

約数和(自身を含む): 36653568

約数和(自身を除く): 14673142

約数列:

[1, 2, 13, 26, 31, 62, 403, 806, 27271, 54542, 354523, 709046, 845401, 1690802, 10990213, 21980426]

約数ペア:

[(1, 21980426), (2, 10990213), (13, 1690802), (26, 845401), (31, 709046), (62, 354523), (403, 54542), (806, 27271)]