21649804

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{41}}^1\times {\mathrm{1091}}^1$

素因数の和:1158

約数の個数: 36

約数和(自身を含む): 42699384

約数和(自身を除く): 21049580

約数列:

[1, 2, 4, 11, 22, 41, 44, 82, 121, 164, 242, 451, 484, 902, 1091, 1804, 2182, 4364, 4961, 9922, 12001, 19844, 24002, 44731, 48004, 89462, 132011, 178924, 264022, 492041, 528044, 984082, 1968164, 5412451, 10824902, 21649804]

約数ペア:

[(1, 21649804), (2, 10824902), (4, 5412451), (11, 1968164), (22, 984082), (41, 528044), (44, 492041), (82, 264022), (121, 178924), (164, 132011), (242, 89462), (451, 48004), (484, 44731), (902, 24002), (1091, 19844), (1804, 12001), (2182, 9922), (4364, 4961)]