21782761

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{463}}^1$

素因数の和:541

約数の個数: 32

約数和(自身を含む): 29933568

約数和(自身を除く): 8150807

約数列:

[1, 7, 11, 13, 47, 77, 91, 143, 329, 463, 517, 611, 1001, 3241, 3619, 4277, 5093, 6019, 6721, 21761, 35651, 42133, 47047, 66209, 152327, 239371, 282893, 463463, 1675597, 1980251, 3111823, 21782761]

約数ペア:

[(1, 21782761), (7, 3111823), (11, 1980251), (13, 1675597), (47, 463463), (77, 282893), (91, 239371), (143, 152327), (329, 66209), (463, 47047), (517, 42133), (611, 35651), (1001, 21761), (3241, 6721), (3619, 6019), (4277, 5093)]