21188923

素因数分解:

$7^2\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{199}}^1$

素因数の和:307

約数の個数: 24

約数和(自身を含む): 25855200

約数和(自身を除く): 4666277

約数列:

[1, 7, 41, 49, 53, 199, 287, 371, 1393, 2009, 2173, 2597, 8159, 9751, 10547, 15211, 57113, 73829, 106477, 399791, 432427, 516803, 3026989, 21188923]

約数ペア:

[(1, 21188923), (7, 3026989), (41, 516803), (49, 432427), (53, 399791), (199, 106477), (287, 73829), (371, 57113), (1393, 15211), (2009, 10547), (2173, 9751), (2597, 8159)]