21258850

素因数分解:

$2^1\times 5^2\times {\mathrm{389}}^1\times {\mathrm{1093}}^1$

素因数の和:1494

約数の個数: 24

約数和(自身を含む): 39679380

約数和(自身を除く): 18420530

約数列:

[1, 2, 5, 10, 25, 50, 389, 778, 1093, 1945, 2186, 3890, 5465, 9725, 10930, 19450, 27325, 54650, 425177, 850354, 2125885, 4251770, 10629425, 21258850]

約数ペア:

[(1, 21258850), (2, 10629425), (5, 4251770), (10, 2125885), (25, 850354), (50, 425177), (389, 54650), (778, 27325), (1093, 19450), (1945, 10930), (2186, 9725), (3890, 5465)]