21256761

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{4339}}^1$

素因数の和:4436

約数の個数: 16

約数和(自身を含む): 29998080

約数和(自身を除く): 8741319

約数列:

[1, 3, 23, 69, 71, 213, 1633, 4339, 4899, 13017, 99797, 299391, 308069, 924207, 7085587, 21256761]

約数ペア:

[(1, 21256761), (3, 7085587), (23, 924207), (69, 308069), (71, 299391), (213, 99797), (1633, 13017), (4339, 4899)]