21961173

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{11981}}^1$

素因数の和:12044

約数の個数: 16

約数和(自身を含む): 32207616

約数和(自身を除く): 10246443

約数列:

[1, 3, 13, 39, 47, 141, 611, 1833, 11981, 35943, 155753, 467259, 563107, 1689321, 7320391, 21961173]

約数ペア:

[(1, 21961173), (3, 7320391), (13, 1689321), (39, 563107), (47, 467259), (141, 155753), (611, 35943), (1833, 11981)]