19888840

素因数分解:

$2^3\times 5^1\times {\mathrm{293}}^1\times {\mathrm{1697}}^1$

素因数の和:2001

約数の個数: 32

約数和(自身を含む): 44929080

約数和(自身を除く): 25040240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 293, 586, 1172, 1465, 1697, 2344, 2930, 3394, 5860, 6788, 8485, 11720, 13576, 16970, 33940, 67880, 497221, 994442, 1988884, 2486105, 3977768, 4972210, 9944420, 19888840]

約数ペア:

[(1, 19888840), (2, 9944420), (4, 4972210), (5, 3977768), (8, 2486105), (10, 1988884), (20, 994442), (40, 497221), (293, 67880), (586, 33940), (1172, 16970), (1465, 13576), (1697, 11720), (2344, 8485), (2930, 6788), (3394, 5860)]