20408185

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{30689}}^1$

素因数の和:30720

約数の個数: 16

約数和(自身を含む): 29462400

約数和(自身を除く): 9054215

約数列:

[1, 5, 7, 19, 35, 95, 133, 665, 30689, 153445, 214823, 583091, 1074115, 2915455, 4081637, 20408185]

約数ペア:

[(1, 20408185), (5, 4081637), (7, 2915455), (19, 1074115), (35, 583091), (95, 214823), (133, 153445), (665, 30689)]