19918955

素因数分解:

$5^1\times 7^1\times {\mathrm{283}}^1\times {\mathrm{2011}}^1$

素因数の和:2306

約数の個数: 16

約数和(自身を含む): 27427584

約数和(自身を除く): 7508629

約数列:

[1, 5, 7, 35, 283, 1415, 1981, 2011, 9905, 10055, 14077, 70385, 569113, 2845565, 3983791, 19918955]

約数ペア:

[(1, 19918955), (5, 3983791), (7, 2845565), (35, 569113), (283, 70385), (1415, 14077), (1981, 10055), (2011, 9905)]