21789104

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{80107}}^1$

素因数の和:80132

約数の個数: 20

約数和(自身を含む): 44700264

約数和(自身を除く): 22911160

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 80107, 160214, 320428, 640856, 1281712, 1361819, 2723638, 5447276, 10894552, 21789104]

約数ペア:

[(1, 21789104), (2, 10894552), (4, 5447276), (8, 2723638), (16, 1361819), (17, 1281712), (34, 640856), (68, 320428), (136, 160214), (272, 80107)]