21292955

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{1021}}^1$

素因数の和:1166

約数の個数: 16

約数和(自身を含む): 26441184

約数和(自身を除く): 5148229

約数列:

[1, 5, 43, 97, 215, 485, 1021, 4171, 5105, 20855, 43903, 99037, 219515, 495185, 4258591, 21292955]

約数ペア:

[(1, 21292955), (5, 4258591), (43, 495185), (97, 219515), (215, 99037), (485, 43903), (1021, 20855), (4171, 5105)]