21821902

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{127}}^1\times {\mathrm{1621}}^1$

素因数の和:1803

約数の個数: 16

約数和(自身を含む): 33633792

約数和(自身を除く): 11811890

約数列:

[1, 2, 53, 106, 127, 254, 1621, 3242, 6731, 13462, 85913, 171826, 205867, 411734, 10910951, 21821902]

約数ペア:

[(1, 21821902), (2, 10910951), (53, 411734), (106, 205867), (127, 171826), (254, 85913), (1621, 13462), (3242, 6731)]