21787138

素因数分解:

$2^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1\times {\mathrm{719}}^1$

素因数の和:969

約数の個数: 16

約数和(自身を含む): 33264000

約数和(自身を除く): 11476862

約数列:

[1, 2, 109, 139, 218, 278, 719, 1438, 15151, 30302, 78371, 99941, 156742, 199882, 10893569, 21787138]

約数ペア:

[(1, 21787138), (2, 10893569), (109, 199882), (139, 156742), (218, 99941), (278, 78371), (719, 30302), (1438, 15151)]