21711687

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{1487}}^1$

素因数の和:1678

約数の個数: 16

約数和(自身を含む): 30093312

約数和(自身を除く): 8381625

約数列:

[1, 3, 31, 93, 157, 471, 1487, 4461, 4867, 14601, 46097, 138291, 233459, 700377, 7237229, 21711687]

約数ペア:

[(1, 21711687), (3, 7237229), (31, 700377), (93, 233459), (157, 138291), (471, 46097), (1487, 14601), (4461, 4867)]