20980267

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{3449}}^1$

素因数の和:3546

約数の個数: 16

約数和(自身を含む): 26496000

約数和(自身を除く): 5515733

約数列:

[1, 7, 11, 77, 79, 553, 869, 3449, 6083, 24143, 37939, 265573, 272471, 1907297, 2997181, 20980267]

約数ペア:

[(1, 20980267), (7, 2997181), (11, 1907297), (77, 272471), (79, 265573), (553, 37939), (869, 24143), (3449, 6083)]