21061270

素因数分解:

$2^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{10691}}^1$

素因数の和:10895

約数の個数: 16

約数和(自身を含む): 38106288

約数和(自身を除く): 17045018

約数列:

[1, 2, 5, 10, 197, 394, 985, 1970, 10691, 21382, 53455, 106910, 2106127, 4212254, 10530635, 21061270]

約数ペア:

[(1, 21061270), (2, 10530635), (5, 4212254), (10, 2106127), (197, 106910), (394, 53455), (985, 21382), (1970, 10691)]