19817560

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10111}}^1$

素因数の和:10136

約数の個数: 48

約数和(自身を含む): 51874560

約数和(自身を除く): 32057000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10111, 20222, 40444, 50555, 70777, 80888, 101110, 141554, 202220, 283108, 353885, 404440, 495439, 566216, 707770, 990878, 1415540, 1981756, 2477195, 2831080, 3963512, 4954390, 9908780, 19817560]

約数ペア:

[(1, 19817560), (2, 9908780), (4, 4954390), (5, 3963512), (7, 2831080), (8, 2477195), (10, 1981756), (14, 1415540), (20, 990878), (28, 707770), (35, 566216), (40, 495439), (49, 404440), (56, 353885), (70, 283108), (98, 202220), (140, 141554), (196, 101110), (245, 80888), (280, 70777), (392, 50555), (490, 40444), (980, 20222), (1960, 10111)]