21008810

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{51241}}^1$

素因数の和:51289

約数の個数: 16

約数和(自身を含む): 38738952

約数和(自身を除く): 17730142

約数列:

[1, 2, 5, 10, 41, 82, 205, 410, 51241, 102482, 256205, 512410, 2100881, 4201762, 10504405, 21008810]

約数ペア:

[(1, 21008810), (2, 10504405), (5, 4201762), (10, 2100881), (41, 512410), (82, 256205), (205, 102482), (410, 51241)]