21685839

素因数分解:

$3^1\times 7^1\times {\mathrm{503}}^1\times {\mathrm{2053}}^1$

素因数の和:2566

約数の個数: 16

約数和(自身を含む): 33126912

約数和(自身を除く): 11441073

約数列:

[1, 3, 7, 21, 503, 1509, 2053, 3521, 6159, 10563, 14371, 43113, 1032659, 3097977, 7228613, 21685839]

約数ペア:

[(1, 21685839), (3, 7228613), (7, 3097977), (21, 1032659), (503, 43113), (1509, 14371), (2053, 10563), (3521, 6159)]