19707009

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{49391}}^1$

素因数の和:49420

約数の個数: 16

約数和(自身を含む): 31610880

約数和(自身を除く): 11903871

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 49391, 148173, 345737, 938429, 1037211, 2815287, 6569003, 19707009]

約数ペア:

[(1, 19707009), (3, 6569003), (7, 2815287), (19, 1037211), (21, 938429), (57, 345737), (133, 148173), (399, 49391)]