21004711

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{3251}}^1$

素因数の和:3342

約数の個数: 16

約数和(自身を含む): 26224128

約数和(自身を除く): 5219417

約数列:

[1, 7, 13, 71, 91, 497, 923, 3251, 6461, 22757, 42263, 230821, 295841, 1615747, 3000673, 21004711]

約数ペア:

[(1, 21004711), (7, 3000673), (13, 1615747), (71, 295841), (91, 230821), (497, 42263), (923, 22757), (3251, 6461)]