19817897

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{653}}^1$

素因数の和:784

約数の個数: 16

約数和(自身を含む): 22602240

約数和(自身を除く): 2784343

約数列:

[1, 11, 31, 89, 341, 653, 979, 2759, 7183, 20243, 30349, 58117, 222673, 639287, 1801627, 19817897]

約数ペア:

[(1, 19817897), (11, 1801627), (31, 639287), (89, 222673), (341, 58117), (653, 30349), (979, 20243), (2759, 7183)]