215325649

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{399491}}^1$

素因数の和:399516

約数の個数: 12

約数和(自身を含む): 273252528

約数和(自身を除く): 57926879

約数列:

[1, 7, 11, 49, 77, 539, 399491, 2796437, 4394401, 19575059, 30760807, 215325649]

約数ペア:

[(1, 215325649), (7, 30760807), (11, 19575059), (49, 4394401), (77, 2796437), (539, 399491)]