200902220

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{15671}}^1$

素因数の和:16321

約数の個数: 24

約数和(自身を含む): 422579808

約数和(自身を除く): 221677588

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 2564, 3205, 6410, 12820, 15671, 31342, 62684, 78355, 156710, 313420, 10045111, 20090222, 40180444, 50225555, 100451110, 200902220]

約数ペア:

[(1, 200902220), (2, 100451110), (4, 50225555), (5, 40180444), (10, 20090222), (20, 10045111), (641, 313420), (1282, 156710), (2564, 78355), (3205, 62684), (6410, 31342), (12820, 15671)]