21110724

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{277}}^1$

素因数の和:389

約数の個数: 72

約数和(自身を含む): 56161560

約数和(自身を除く): 35050836

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 58, 73, 87, 116, 146, 174, 219, 261, 277, 292, 348, 438, 522, 554, 657, 831, 876, 1044, 1108, 1314, 1662, 2117, 2493, 2628, 3324, 4234, 4986, 6351, 8033, 8468, 9972, 12702, 16066, 19053, 20221, 24099, 25404, 32132, 38106, 40442, 48198, 60663, 72297, 76212, 80884, 96396, 121326, 144594, 181989, 242652, 289188, 363978, 586409, 727956, 1172818, 1759227, 2345636, 3518454, 5277681, 7036908, 10555362, 21110724]

約数ペア:

[(1, 21110724), (2, 10555362), (3, 7036908), (4, 5277681), (6, 3518454), (9, 2345636), (12, 1759227), (18, 1172818), (29, 727956), (36, 586409), (58, 363978), (73, 289188), (87, 242652), (116, 181989), (146, 144594), (174, 121326), (219, 96396), (261, 80884), (277, 76212), (292, 72297), (348, 60663), (438, 48198), (522, 40442), (554, 38106), (657, 32132), (831, 25404), (876, 24099), (1044, 20221), (1108, 19053), (1314, 16066), (1662, 12702), (2117, 9972), (2493, 8468), (2628, 8033), (3324, 6351), (4234, 4986)]