21299306

素因数分解:

$2^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{3911}}^1$

素因数の和:4309

約数の個数: 16

約数和(自身を含む): 36616320

約数和(自身を除く): 15317014

約数列:

[1, 2, 7, 14, 389, 778, 2723, 3911, 5446, 7822, 27377, 54754, 1521379, 3042758, 10649653, 21299306]

約数ペア:

[(1, 21299306), (2, 10649653), (7, 3042758), (14, 1521379), (389, 54754), (778, 27377), (2723, 7822), (3911, 5446)]