21837178

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{193}}^1$

素因数の和:382

約数の個数: 32

約数和(自身を含む): 37154880

約数和(自身を除く): 15317702

約数列:

[1, 2, 11, 22, 37, 74, 139, 193, 278, 386, 407, 814, 1529, 2123, 3058, 4246, 5143, 7141, 10286, 14282, 26827, 53654, 56573, 78551, 113146, 157102, 295097, 590194, 992599, 1985198, 10918589, 21837178]

約数ペア:

[(1, 21837178), (2, 10918589), (11, 1985198), (22, 992599), (37, 590194), (74, 295097), (139, 157102), (193, 113146), (278, 78551), (386, 56573), (407, 53654), (814, 26827), (1529, 14282), (2123, 10286), (3058, 7141), (4246, 5143)]