19805807

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{853}}^1$

素因数の和:998

約数の個数: 16

約数和(自身を含む): 23611392

約数和(自身を除く): 3805585

約数列:

[1, 7, 31, 107, 217, 749, 853, 3317, 5971, 23219, 26443, 91271, 185101, 638897, 2829401, 19805807]

約数ペア:

[(1, 19805807), (7, 2829401), (31, 638897), (107, 185101), (217, 91271), (749, 26443), (853, 23219), (3317, 5971)]