21027699

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1597}}^1$

素因数の和:1640

約数の個数: 48

約数和(自身を含む): 39886080

約数和(自身を除く): 18858381

約数列:

[1, 3, 7, 9, 11, 19, 21, 33, 57, 63, 77, 99, 133, 171, 209, 231, 399, 627, 693, 1197, 1463, 1597, 1881, 4389, 4791, 11179, 13167, 14373, 17567, 30343, 33537, 52701, 91029, 100611, 122969, 158103, 212401, 273087, 333773, 368907, 637203, 1001319, 1106721, 1911609, 2336411, 3003957, 7009233, 21027699]

約数ペア:

[(1, 21027699), (3, 7009233), (7, 3003957), (9, 2336411), (11, 1911609), (19, 1106721), (21, 1001319), (33, 637203), (57, 368907), (63, 333773), (77, 273087), (99, 212401), (133, 158103), (171, 122969), (209, 100611), (231, 91029), (399, 52701), (627, 33537), (693, 30343), (1197, 17567), (1463, 14373), (1597, 13167), (1881, 11179), (4389, 4791)]