20908489

素因数分解:

$7^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1\times {\mathrm{409}}^1$

素因数の和:592

約数の個数: 16

約数和(自身を含む): 24534400

約数和(自身を除く): 3625911

約数列:

[1, 7, 67, 109, 409, 469, 763, 2863, 7303, 27403, 44581, 51121, 191821, 312067, 2986927, 20908489]

約数ペア:

[(1, 20908489), (7, 2986927), (67, 312067), (109, 191821), (409, 51121), (469, 44581), (763, 27403), (2863, 7303)]