21278554

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{463}}^1\times {\mathrm{2089}}^1$

素因数の和:2565

約数の個数: 16

約数和(自身を含む): 34911360

約数和(自身を除く): 13632806

約数列:

[1, 2, 11, 22, 463, 926, 2089, 4178, 5093, 10186, 22979, 45958, 967207, 1934414, 10639277, 21278554]

約数ペア:

[(1, 21278554), (2, 10639277), (11, 1934414), (22, 967207), (463, 45958), (926, 22979), (2089, 10186), (4178, 5093)]