16721307

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{821}}^1$

素因数の和:931

約数の個数: 24

約数和(自身を含む): 25304448

約数和(自身を除く): 8583141

約数列:

[1, 3, 9, 31, 73, 93, 219, 279, 657, 821, 2263, 2463, 6789, 7389, 20367, 25451, 59933, 76353, 179799, 229059, 539397, 1857923, 5573769, 16721307]

約数ペア:

[(1, 16721307), (3, 5573769), (9, 1857923), (31, 539397), (73, 229059), (93, 179799), (219, 76353), (279, 59933), (657, 25451), (821, 20367), (2263, 7389), (2463, 6789)]