19320565

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{3947}}^1$

素因数の和:4052

約数の個数: 16

約数和(自身を含む): 25583040

約数和(自身を除く): 6262475

約数列:

[1, 5, 11, 55, 89, 445, 979, 3947, 4895, 19735, 43417, 217085, 351283, 1756415, 3864113, 19320565]

約数ペア:

[(1, 19320565), (5, 3864113), (11, 1756415), (55, 351283), (89, 217085), (445, 43417), (979, 19735), (3947, 4895)]