21385371

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{1619}}^1$

素因数の和:1683

約数の個数: 32

約数和(自身を含む): 35458560

約数和(自身を除く): 14073189

約数列:

[1, 3, 7, 17, 21, 37, 51, 111, 119, 259, 357, 629, 777, 1619, 1887, 4403, 4857, 11333, 13209, 27523, 33999, 59903, 82569, 179709, 192661, 419321, 577983, 1018351, 1257963, 3055053, 7128457, 21385371]

約数ペア:

[(1, 21385371), (3, 7128457), (7, 3055053), (17, 1257963), (21, 1018351), (37, 577983), (51, 419321), (111, 192661), (119, 179709), (259, 82569), (357, 59903), (629, 33999), (777, 27523), (1619, 13209), (1887, 11333), (4403, 4857)]