2191329

素因数分解:

$3^2\times 7^2\times {\mathrm{4969}}^1$

素因数の和:4989

約数の個数: 18

約数和(自身を含む): 3682770

約数和(自身を除く): 1491441

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 4969, 14907, 34783, 44721, 104349, 243481, 313047, 730443, 2191329]

約数ペア:

[(1, 2191329), (3, 730443), (7, 313047), (9, 243481), (21, 104349), (49, 44721), (63, 34783), (147, 14907), (441, 4969)]