21291363957

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{8686807}}^1$

素因数の和:8686872

約数の個数: 16

約数和(自身を含む): 30577564160

約数和(自身を除く): 9286200203

約数列:

[1, 3, 19, 43, 57, 129, 817, 2451, 8686807, 26060421, 165049333, 373532701, 495147999, 1120598103, 7097121319, 21291363957]

約数ペア:

[(1, 21291363957), (3, 7097121319), (19, 1120598103), (43, 495147999), (57, 373532701), (129, 165049333), (817, 26060421), (2451, 8686807)]