21782956

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{13513}}^1$

素因数の和:13561

約数の個数: 24

約数和(自身を含む): 42379904

約数和(自身を除く): 20596948

約数列:

[1, 2, 4, 13, 26, 31, 52, 62, 124, 403, 806, 1612, 13513, 27026, 54052, 175669, 351338, 418903, 702676, 837806, 1675612, 5445739, 10891478, 21782956]

約数ペア:

[(1, 21782956), (2, 10891478), (4, 5445739), (13, 1675612), (26, 837806), (31, 702676), (52, 418903), (62, 351338), (124, 175669), (403, 54052), (806, 27026), (1612, 13513)]