21044527

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1\times {\mathrm{421}}^1$

素因数の和:658

約数の個数: 16

約数和(自身を含む): 24887872

約数和(自身を除く): 3843345

約数列:

[1, 7, 37, 193, 259, 421, 1351, 2947, 7141, 15577, 49987, 81253, 109039, 568771, 3006361, 21044527]

約数ペア:

[(1, 21044527), (7, 3006361), (37, 568771), (193, 109039), (259, 81253), (421, 49987), (1351, 15577), (2947, 7141)]