21759913

素因数分解:

$7^1\times {\mathrm{73}}^1\times {\mathrm{97}}^1\times {\mathrm{439}}^1$

素因数の和:616

約数の個数: 16

約数和(自身を含む): 25527040

約数和(自身を除く): 3767127

約数列:

[1, 7, 73, 97, 439, 511, 679, 3073, 7081, 32047, 42583, 49567, 224329, 298081, 3108559, 21759913]

約数ペア:

[(1, 21759913), (7, 3108559), (73, 298081), (97, 224329), (439, 49567), (511, 42583), (679, 32047), (3073, 7081)]