21249877

素因数分解:

${\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{479}}^1$

素因数の和:636

約数の個数: 16

約数和(自身を含む): 24076800

約数和(自身を除く): 2826923

約数列:

[1, 11, 37, 109, 407, 479, 1199, 4033, 5269, 17723, 44363, 52211, 194953, 574321, 1931807, 21249877]

約数ペア:

[(1, 21249877), (11, 1931807), (37, 574321), (109, 194953), (407, 52211), (479, 44363), (1199, 17723), (4033, 5269)]