19815944

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{79903}}^1$

素因数の和:79940

約数の個数: 16

約数和(自身を含む): 38353920

約数和(自身を除く): 18537976

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 79903, 159806, 319612, 639224, 2476993, 4953986, 9907972, 19815944]

約数ペア:

[(1, 19815944), (2, 9907972), (4, 4953986), (8, 2476993), (31, 639224), (62, 319612), (124, 159806), (248, 79903)]