21165104

素因数分解:

$2^4\times {\mathrm{521}}^1\times {\mathrm{2539}}^1$

素因数の和:3068

約数の個数: 20

約数和(自身を含む): 41102280

約数和(自身を除く): 19937176

約数列:

[1, 2, 4, 8, 16, 521, 1042, 2084, 2539, 4168, 5078, 8336, 10156, 20312, 40624, 1322819, 2645638, 5291276, 10582552, 21165104]

約数ペア:

[(1, 21165104), (2, 10582552), (4, 5291276), (8, 2645638), (16, 1322819), (521, 40624), (1042, 20312), (2084, 10156), (2539, 8336), (4168, 5078)]