156639721

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{77969}}^1$

素因数の和:78024

約数の個数: 12

約数和(自身を含む): 186660180

約数和(自身を除く): 30020459

約数列:

[1, 7, 41, 49, 287, 2009, 77969, 545783, 3196729, 3820481, 22377103, 156639721]

約数ペア:

[(1, 156639721), (7, 22377103), (41, 3820481), (49, 3196729), (287, 545783), (2009, 77969)]