19403881

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{191}}^1\times {\mathrm{631}}^1$

素因数の和:852

約数の個数: 16

約数和(自身を含む): 23298048

約数和(自身を除く): 3894167

約数列:

[1, 7, 23, 161, 191, 631, 1337, 4393, 4417, 14513, 30751, 101591, 120521, 843647, 2771983, 19403881]

約数ペア:

[(1, 19403881), (7, 2771983), (23, 843647), (161, 120521), (191, 101591), (631, 30751), (1337, 14513), (4393, 4417)]