21371311

素因数分解:

${\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1\times {\mathrm{283}}^1$

素因数の和:490

約数の個数: 16

約数和(自身を含む): 23871904

約数和(自身を除く): 2500593

約数列:

[1, 13, 37, 157, 283, 481, 2041, 3679, 5809, 10471, 44431, 75517, 136123, 577603, 1643947, 21371311]

約数ペア:

[(1, 21371311), (13, 1643947), (37, 577603), (157, 136123), (283, 75517), (481, 44431), (2041, 10471), (3679, 5809)]