19988714

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{4721}}^1$

素因数の和:4825

約数の個数: 16

約数和(自身を含む): 31448520

約数和(自身を除く): 11459806

約数列:

[1, 2, 29, 58, 73, 146, 2117, 4234, 4721, 9442, 136909, 273818, 344633, 689266, 9994357, 19988714]

約数ペア:

[(1, 19988714), (2, 9994357), (29, 689266), (58, 344633), (73, 273818), (146, 136909), (2117, 9442), (4234, 4721)]