21116845

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{239}}^1\times {\mathrm{431}}^1$

素因数の和:716

約数の個数: 16

約数和(自身を含む): 26127360

約数和(自身を除く): 5010515

約数列:

[1, 5, 41, 205, 239, 431, 1195, 2155, 9799, 17671, 48995, 88355, 103009, 515045, 4223369, 21116845]

約数ペア:

[(1, 21116845), (5, 4223369), (41, 515045), (205, 103009), (239, 88355), (431, 48995), (1195, 17671), (2155, 9799)]