20985668

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{8999}}^1$

素因数の和:9067

約数の個数: 24

約数和(自身を含む): 40824000

約数和(自身を除く): 19838332

約数列:

[1, 2, 4, 11, 22, 44, 53, 106, 212, 583, 1166, 2332, 8999, 17998, 35996, 98989, 197978, 395956, 476947, 953894, 1907788, 5246417, 10492834, 20985668]

約数ペア:

[(1, 20985668), (2, 10492834), (4, 5246417), (11, 1907788), (22, 953894), (44, 476947), (53, 395956), (106, 197978), (212, 98989), (583, 35996), (1166, 17998), (2332, 8999)]