18987748

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{11779}}^1$

素因数の和:11827

約数の個数: 24

約数和(自身を含む): 36942080

約数和(自身を除く): 17954332

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 806, 1612, 11779, 23558, 47116, 153127, 306254, 365149, 612508, 730298, 1460596, 4746937, 9493874, 18987748]

約数ペア:

[(1, 18987748), (2, 9493874), (4, 4746937), (13, 1460596), (26, 730298), (31, 612508), (52, 365149), (62, 306254), (124, 153127), (403, 47116), (806, 23558), (1612, 11779)]