21819716

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{1373}}^1$

素因数の和:1543

約数の個数: 24

約数和(自身を含む): 39818520

約数和(自身を除く): 17998804

約数列:

[1, 2, 4, 29, 58, 116, 137, 274, 548, 1373, 2746, 3973, 5492, 7946, 15892, 39817, 79634, 159268, 188101, 376202, 752404, 5454929, 10909858, 21819716]

約数ペア:

[(1, 21819716), (2, 10909858), (4, 5454929), (29, 752404), (58, 376202), (116, 188101), (137, 159268), (274, 79634), (548, 39817), (1373, 15892), (2746, 7946), (3973, 5492)]