21978676

素因数分解:

$2^2\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{2411}}^1$

素因数の和:2511

約数の個数: 24

約数和(自身を含む): 40116384

約数和(自身を除く): 18137708

約数列:

[1, 2, 4, 43, 53, 86, 106, 172, 212, 2279, 2411, 4558, 4822, 9116, 9644, 103673, 127783, 207346, 255566, 414692, 511132, 5494669, 10989338, 21978676]

約数ペア:

[(1, 21978676), (2, 10989338), (4, 5494669), (43, 511132), (53, 414692), (86, 255566), (106, 207346), (172, 127783), (212, 103673), (2279, 9644), (2411, 9116), (4558, 4822)]