18979774

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{911}}^1\times {\mathrm{947}}^1$

素因数の和:1871

約数の個数: 16

約数和(自身を含む): 31124736

約数和(自身を除く): 12144962

約数列:

[1, 2, 11, 22, 911, 947, 1822, 1894, 10021, 10417, 20042, 20834, 862717, 1725434, 9489887, 18979774]

約数ペア:

[(1, 18979774), (2, 9489887), (11, 1725434), (22, 862717), (911, 20834), (947, 20042), (1822, 10417), (1894, 10021)]