21871124

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{7001}}^1$

素因数の和:7087

約数の個数: 24

約数和(自身を含む): 42348096

約数和(自身を除く): 20476972

約数列:

[1, 2, 4, 11, 22, 44, 71, 142, 284, 781, 1562, 3124, 7001, 14002, 28004, 77011, 154022, 308044, 497071, 994142, 1988284, 5467781, 10935562, 21871124]

約数ペア:

[(1, 21871124), (2, 10935562), (4, 5467781), (11, 1988284), (22, 994142), (44, 497071), (71, 308044), (142, 154022), (284, 77011), (781, 28004), (1562, 14002), (3124, 7001)]