20641544

素因数分解:

$2^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{4787}}^1$

素因数の和:4818

約数の個数: 48

約数和(自身を含む): 49124880

約数和(自身を除く): 28483336

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 49, 56, 77, 88, 98, 154, 196, 308, 392, 539, 616, 1078, 2156, 4312, 4787, 9574, 19148, 33509, 38296, 52657, 67018, 105314, 134036, 210628, 234563, 268072, 368599, 421256, 469126, 737198, 938252, 1474396, 1876504, 2580193, 2948792, 5160386, 10320772, 20641544]

約数ペア:

[(1, 20641544), (2, 10320772), (4, 5160386), (7, 2948792), (8, 2580193), (11, 1876504), (14, 1474396), (22, 938252), (28, 737198), (44, 469126), (49, 421256), (56, 368599), (77, 268072), (88, 234563), (98, 210628), (154, 134036), (196, 105314), (308, 67018), (392, 52657), (539, 38296), (616, 33509), (1078, 19148), (2156, 9574), (4312, 4787)]