20666884

素因数分解:

$2^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{10111}}^1$

素因数の和:10195

約数の個数: 24

約数和(自身を含む): 41904128

約数和(自身を除く): 21237244

約数列:

[1, 2, 4, 7, 14, 28, 73, 146, 292, 511, 1022, 2044, 10111, 20222, 40444, 70777, 141554, 283108, 738103, 1476206, 2952412, 5166721, 10333442, 20666884]

約数ペア:

[(1, 20666884), (2, 10333442), (4, 5166721), (7, 2952412), (14, 1476206), (28, 738103), (73, 283108), (146, 141554), (292, 70777), (511, 40444), (1022, 20222), (2044, 10111)]