19380885

素因数分解:

$3^1\times 5^1\times {\mathrm{647}}^1\times {\mathrm{1997}}^1$

素因数の和:2652

約数の個数: 16

約数和(自身を含む): 31072896

約数和(自身を除く): 11692011

約数列:

[1, 3, 5, 15, 647, 1941, 1997, 3235, 5991, 9705, 9985, 29955, 1292059, 3876177, 6460295, 19380885]

約数ペア:

[(1, 19380885), (3, 6460295), (5, 3876177), (15, 1292059), (647, 29955), (1941, 9985), (1997, 9705), (3235, 5991)]