21531741

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{5483}}^1$

素因数の和:5521

約数の個数: 32

約数和(自身を含む): 37905408

約数和(自身を除く): 16373667

約数列:

[1, 3, 7, 11, 17, 21, 33, 51, 77, 119, 187, 231, 357, 561, 1309, 3927, 5483, 16449, 38381, 60313, 93211, 115143, 180939, 279633, 422191, 652477, 1025321, 1266573, 1957431, 3075963, 7177247, 21531741]

約数ペア:

[(1, 21531741), (3, 7177247), (7, 3075963), (11, 1957431), (17, 1266573), (21, 1025321), (33, 652477), (51, 422191), (77, 279633), (119, 180939), (187, 115143), (231, 93211), (357, 60313), (561, 38381), (1309, 16449), (3927, 5483)]