21525009

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:146

約数の個数: 48

約数和(自身を含む): 34718016

約数和(自身を除く): 13193007

約数列:

[1, 3, 11, 17, 33, 37, 51, 61, 111, 183, 187, 289, 407, 561, 629, 671, 867, 1037, 1221, 1887, 2013, 2257, 3111, 3179, 6771, 6919, 9537, 10693, 11407, 17629, 20757, 24827, 32079, 34221, 38369, 52887, 74481, 115107, 117623, 193919, 352869, 422059, 581757, 652273, 1266177, 1956819, 7175003, 21525009]

約数ペア:

[(1, 21525009), (3, 7175003), (11, 1956819), (17, 1266177), (33, 652273), (37, 581757), (51, 422059), (61, 352869), (111, 193919), (183, 117623), (187, 115107), (289, 74481), (407, 52887), (561, 38369), (629, 34221), (671, 32079), (867, 24827), (1037, 20757), (1221, 17629), (1887, 11407), (2013, 10693), (2257, 9537), (3111, 6919), (3179, 6771)]