21664869

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{2749}}^1$

素因数の和:2860

約数の個数: 16

約数和(自身を含む): 30096000

約数和(自身を除く): 8431131

約数列:

[1, 3, 37, 71, 111, 213, 2627, 2749, 7881, 8247, 101713, 195179, 305139, 585537, 7221623, 21664869]

約数ペア:

[(1, 21664869), (3, 7221623), (37, 585537), (71, 305139), (111, 195179), (213, 101713), (2627, 8247), (2749, 7881)]