19726828

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{2477}}^1$

素因数の和:2673

約数の個数: 24

約数和(自身を含む): 37883664

約数和(自身を除く): 18156836

約数列:

[1, 2, 4, 11, 22, 44, 181, 362, 724, 1991, 2477, 3982, 4954, 7964, 9908, 27247, 54494, 108988, 448337, 896674, 1793348, 4931707, 9863414, 19726828]

約数ペア:

[(1, 19726828), (2, 9863414), (4, 4931707), (11, 1793348), (22, 896674), (44, 448337), (181, 108988), (362, 54494), (724, 27247), (1991, 9908), (2477, 7964), (3982, 4954)]