19947907

素因数分解:

$7^1\times {\mathrm{73}}^1\times {\mathrm{103}}^1\times {\mathrm{379}}^1$

素因数の和:562

約数の個数: 16

約数和(自身を含む): 23395840

約数和(自身を除く): 3447933

約数列:

[1, 7, 73, 103, 379, 511, 721, 2653, 7519, 27667, 39037, 52633, 193669, 273259, 2849701, 19947907]

約数ペア:

[(1, 19947907), (7, 2849701), (73, 273259), (103, 193669), (379, 52633), (511, 39037), (721, 27667), (2653, 7519)]