20787837

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{223}}^1$

素因数の和:449

約数の個数: 32

約数和(自身を含む): 33374208

約数和(自身を除く): 12586371

約数列:

[1, 3, 7, 21, 23, 69, 161, 193, 223, 483, 579, 669, 1351, 1561, 4053, 4439, 4683, 5129, 13317, 15387, 31073, 35903, 43039, 93219, 107709, 129117, 301273, 903819, 989897, 2969691, 6929279, 20787837]

約数ペア:

[(1, 20787837), (3, 6929279), (7, 2969691), (21, 989897), (23, 903819), (69, 301273), (161, 129117), (193, 107709), (223, 93219), (483, 43039), (579, 35903), (669, 31073), (1351, 15387), (1561, 13317), (4053, 5129), (4439, 4683)]