209905420

素因数分解:

$2^2\times 5^1\times {\mathrm{2113}}^1\times {\mathrm{4967}}^1$

素因数の和:7089

約数の個数: 24

約数和(自身を含む): 441098784

約数和(自身を除く): 231193364

約数列:

[1, 2, 4, 5, 10, 20, 2113, 4226, 4967, 8452, 9934, 10565, 19868, 21130, 24835, 42260, 49670, 99340, 10495271, 20990542, 41981084, 52476355, 104952710, 209905420]

約数ペア:

[(1, 209905420), (2, 104952710), (4, 52476355), (5, 41981084), (10, 20990542), (20, 10495271), (2113, 99340), (4226, 49670), (4967, 42260), (8452, 24835), (9934, 21130), (10565, 19868)]