21080101

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{353}}^1\times {\mathrm{449}}^1$

素因数の和:828

約数の個数: 16

約数和(自身を含む): 25488000

約数和(自身を除く): 4407899

約数列:

[1, 7, 19, 133, 353, 449, 2471, 3143, 6707, 8531, 46949, 59717, 158497, 1109479, 3011443, 21080101]

約数ペア:

[(1, 21080101), (7, 3011443), (19, 1109479), (133, 158497), (353, 59717), (449, 46949), (2471, 8531), (3143, 6707)]