18840892

素因数分解:

$2^2\times 7^2\times {\mathrm{97}}^1\times {\mathrm{991}}^1$

素因数の和:1106

約数の個数: 36

約数和(自身を含む): 38789184

約数和(自身を除く): 19948292

約数列:

[1, 2, 4, 7, 14, 28, 49, 97, 98, 194, 196, 388, 679, 991, 1358, 1982, 2716, 3964, 4753, 6937, 9506, 13874, 19012, 27748, 48559, 96127, 97118, 192254, 194236, 384508, 672889, 1345778, 2691556, 4710223, 9420446, 18840892]

約数ペア:

[(1, 18840892), (2, 9420446), (4, 4710223), (7, 2691556), (14, 1345778), (28, 672889), (49, 384508), (97, 194236), (98, 192254), (194, 97118), (196, 96127), (388, 48559), (679, 27748), (991, 19012), (1358, 13874), (1982, 9506), (2716, 6937), (3964, 4753)]