21232220

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1\times {\mathrm{457}}^1$

素因数の和:590

約数の個数: 48

約数和(自身を含む): 47089728

約数和(自身を除く): 25857508

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 101, 115, 202, 230, 404, 457, 460, 505, 914, 1010, 1828, 2020, 2285, 2323, 4570, 4646, 9140, 9292, 10511, 11615, 21022, 23230, 42044, 46157, 46460, 52555, 92314, 105110, 184628, 210220, 230785, 461570, 923140, 1061611, 2123222, 4246444, 5308055, 10616110, 21232220]

約数ペア:

[(1, 21232220), (2, 10616110), (4, 5308055), (5, 4246444), (10, 2123222), (20, 1061611), (23, 923140), (46, 461570), (92, 230785), (101, 210220), (115, 184628), (202, 105110), (230, 92314), (404, 52555), (457, 46460), (460, 46157), (505, 42044), (914, 23230), (1010, 21022), (1828, 11615), (2020, 10511), (2285, 9292), (2323, 9140), (4570, 4646)]