20996216

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{2939}}^1$

素因数の和:3011

約数の個数: 32

約数和(自身を含む): 42336000

約数和(自身を除く): 21339784

約数列:

[1, 2, 4, 8, 19, 38, 47, 76, 94, 152, 188, 376, 893, 1786, 2939, 3572, 5878, 7144, 11756, 23512, 55841, 111682, 138133, 223364, 276266, 446728, 552532, 1105064, 2624527, 5249054, 10498108, 20996216]

約数ペア:

[(1, 20996216), (2, 10498108), (4, 5249054), (8, 2624527), (19, 1105064), (38, 552532), (47, 446728), (76, 276266), (94, 223364), (152, 138133), (188, 111682), (376, 55841), (893, 23512), (1786, 11756), (2939, 7144), (3572, 5878)]