213256981

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{439}}^1\times {\mathrm{2393}}^1$

素因数の和:2868

約数の個数: 16

約数和(自身を含む): 252806400

約数和(自身を除く): 39549419

約数列:

[1, 7, 29, 203, 439, 2393, 3073, 12731, 16751, 69397, 89117, 485779, 1050527, 7353689, 30465283, 213256981]

約数ペア:

[(1, 213256981), (7, 30465283), (29, 7353689), (203, 1050527), (439, 485779), (2393, 89117), (3073, 69397), (12731, 16751)]