18973976

素因数分解:

$2^3\times 7^2\times {\mathrm{97}}^1\times {\mathrm{499}}^1$

素因数の和:616

約数の個数: 48

約数和(自身を含む): 41895000

約数和(自身を除く): 22921024

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 97, 98, 194, 196, 388, 392, 499, 679, 776, 998, 1358, 1996, 2716, 3493, 3992, 4753, 5432, 6986, 9506, 13972, 19012, 24451, 27944, 38024, 48403, 48902, 96806, 97804, 193612, 195608, 338821, 387224, 677642, 1355284, 2371747, 2710568, 4743494, 9486988, 18973976]

約数ペア:

[(1, 18973976), (2, 9486988), (4, 4743494), (7, 2710568), (8, 2371747), (14, 1355284), (28, 677642), (49, 387224), (56, 338821), (97, 195608), (98, 193612), (194, 97804), (196, 96806), (388, 48902), (392, 48403), (499, 38024), (679, 27944), (776, 24451), (998, 19012), (1358, 13972), (1996, 9506), (2716, 6986), (3493, 5432), (3992, 4753)]