19122719

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{107}}^1\times {\mathrm{211}}^1$

素因数の和:347

約数の個数: 24

約数和(自身を含む): 24361344

約数和(自身を除く): 5238625

約数列:

[1, 7, 11, 77, 107, 121, 211, 749, 847, 1177, 1477, 2321, 8239, 12947, 16247, 22577, 25531, 90629, 158039, 178717, 248347, 1738429, 2731817, 19122719]

約数ペア:

[(1, 19122719), (7, 2731817), (11, 1738429), (77, 248347), (107, 178717), (121, 158039), (211, 90629), (749, 25531), (847, 22577), (1177, 16247), (1477, 12947), (2321, 8239)]