21040912

素因数分解:

$2^4\times {\mathrm{991}}^1\times {\mathrm{1327}}^1$

素因数の和:2326

約数の個数: 20

約数和(自身を含む): 40838656

約数和(自身を除く): 19797744

約数列:

[1, 2, 4, 8, 16, 991, 1327, 1982, 2654, 3964, 5308, 7928, 10616, 15856, 21232, 1315057, 2630114, 5260228, 10520456, 21040912]

約数ペア:

[(1, 21040912), (2, 10520456), (4, 5260228), (8, 2630114), (16, 1315057), (991, 21232), (1327, 15856), (1982, 10616), (2654, 7928), (3964, 5308)]