19795321

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{107}}^2$

素因数の和:253

約数の個数: 24

約数和(自身を含む): 25887680

約数和(自身を除く): 6092359

約数列:

[1, 7, 13, 19, 91, 107, 133, 247, 749, 1391, 1729, 2033, 9737, 11449, 14231, 26429, 80143, 148837, 185003, 217531, 1041859, 1522717, 2827903, 19795321]

約数ペア:

[(1, 19795321), (7, 2827903), (13, 1522717), (19, 1041859), (91, 217531), (107, 185003), (133, 148837), (247, 80143), (749, 26429), (1391, 14231), (1729, 11449), (2033, 9737)]