21871976

素因数分解:

$2^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{5501}}^1$

素因数の和:5585

約数の個数: 32

約数和(自身を含む): 47537280

約数和(自身を除く): 25665304

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 71, 142, 284, 497, 568, 994, 1988, 3976, 5501, 11002, 22004, 38507, 44008, 77014, 154028, 308056, 390571, 781142, 1562284, 2733997, 3124568, 5467994, 10935988, 21871976]

約数ペア:

[(1, 21871976), (2, 10935988), (4, 5467994), (7, 3124568), (8, 2733997), (14, 1562284), (28, 781142), (56, 390571), (71, 308056), (142, 154028), (284, 77014), (497, 44008), (568, 38507), (994, 22004), (1988, 11002), (3976, 5501)]