19780273

素因数分解:

${\mathrm{19}}^2\times {\mathrm{157}}^1\times {\mathrm{349}}^1$

素因数の和:544

約数の個数: 12

約数和(自身を含む): 21069300

約数和(自身を除く): 1289027

約数列:

[1, 19, 157, 349, 361, 2983, 6631, 54793, 56677, 125989, 1041067, 19780273]

約数ペア:

[(1, 19780273), (19, 1041067), (157, 125989), (349, 56677), (361, 54793), (2983, 6631)]