21005604

素因数分解:

$2^2\times 3^2\times {\mathrm{73}}^1\times {\mathrm{7993}}^1$

素因数の和:8076

約数の個数: 36

約数和(自身を含む): 53831596

約数和(自身を除く): 32825992

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 73, 146, 219, 292, 438, 657, 876, 1314, 2628, 7993, 15986, 23979, 31972, 47958, 71937, 95916, 143874, 287748, 583489, 1166978, 1750467, 2333956, 3500934, 5251401, 7001868, 10502802, 21005604]

約数ペア:

[(1, 21005604), (2, 10502802), (3, 7001868), (4, 5251401), (6, 3500934), (9, 2333956), (12, 1750467), (18, 1166978), (36, 583489), (73, 287748), (146, 143874), (219, 95916), (292, 71937), (438, 47958), (657, 31972), (876, 23979), (1314, 15986), (2628, 7993)]