21008710

素因数分解:

$2^1\times 5^1\times {\mathrm{449}}^1\times {\mathrm{4679}}^1$

素因数の和:5135

約数の個数: 16

約数和(自身を含む): 37908000

約数和(自身を除く): 16899290

約数列:

[1, 2, 5, 10, 449, 898, 2245, 4490, 4679, 9358, 23395, 46790, 2100871, 4201742, 10504355, 21008710]

約数ペア:

[(1, 21008710), (2, 10504355), (5, 4201742), (10, 2100871), (449, 46790), (898, 23395), (2245, 9358), (4490, 4679)]