21868

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1$

素因数の和:93

約数の個数: 24

約数和(自身を含む): 48384

約数和(自身を除く): 26516

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 71, 77, 142, 154, 284, 308, 497, 781, 994, 1562, 1988, 3124, 5467, 10934, 21868]

約数ペア:

[(1, 21868), (2, 10934), (4, 5467), (7, 3124), (11, 1988), (14, 1562), (22, 994), (28, 781), (44, 497), (71, 308), (77, 284), (142, 154)]