21382004

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{20639}}^1$

素因数の和:20687

約数の個数: 24

約数和(自身を含む): 43921920

約数和(自身を除く): 22539916

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 148, 259, 518, 1036, 20639, 41278, 82556, 144473, 288946, 577892, 763643, 1527286, 3054572, 5345501, 10691002, 21382004]

約数ペア:

[(1, 21382004), (2, 10691002), (4, 5345501), (7, 3054572), (14, 1527286), (28, 763643), (37, 577892), (74, 288946), (148, 144473), (259, 82556), (518, 41278), (1036, 20639)]