21200487

素因数分解:

$3^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{1873}}^1$

素因数の和:1908

約数の個数: 32

約数和(自身を含む): 35980800

約数和(自身を除く): 14780313

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 343, 539, 1029, 1617, 1873, 3773, 5619, 11319, 13111, 20603, 39333, 61809, 91777, 144221, 275331, 432663, 642439, 1009547, 1927317, 3028641, 7066829, 21200487]

約数ペア:

[(1, 21200487), (3, 7066829), (7, 3028641), (11, 1927317), (21, 1009547), (33, 642439), (49, 432663), (77, 275331), (147, 144221), (231, 91777), (343, 61809), (539, 39333), (1029, 20603), (1617, 13111), (1873, 11319), (3773, 5619)]