21278663

素因数分解:

$7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{2833}}^1$

素因数の和:2906

約数の個数: 16

約数和(自身を含む): 25846080

約数和(自身を除く): 4567417

約数列:

[1, 7, 29, 37, 203, 259, 1073, 2833, 7511, 19831, 82157, 104821, 575099, 733747, 3039809, 21278663]

約数ペア:

[(1, 21278663), (7, 3039809), (29, 733747), (37, 575099), (203, 104821), (259, 82157), (1073, 19831), (2833, 7511)]