21672812

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12689}}^1$

素因数の和:12761

約数の個数: 24

約数和(自身を含む): 44059680

約数和(自身を除く): 22386868

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 12689, 25378, 50756, 88823, 177646, 355292, 774029, 1548058, 3096116, 5418203, 10836406, 21672812]

約数ペア:

[(1, 21672812), (2, 10836406), (4, 5418203), (7, 3096116), (14, 1548058), (28, 774029), (61, 355292), (122, 177646), (244, 88823), (427, 50756), (854, 25378), (1708, 12689)]