211689947

素因数分解:

$7^2\times {\mathrm{61}}^1\times {\mathrm{70823}}^1$

素因数の和:70898

約数の個数: 12

約数和(自身を含む): 250292016

約数和(自身を除く): 38602069

約数列:

[1, 7, 49, 61, 427, 2989, 70823, 495761, 3470327, 4320203, 30241421, 211689947]

約数ペア:

[(1, 211689947), (7, 30241421), (49, 4320203), (61, 3470327), (427, 495761), (2989, 70823)]