21608643

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1747}}^1$

素因数の和:1807

約数の個数: 32

約数和(自身を含む): 35799040

約数和(自身を除く): 14190397

約数列:

[1, 3, 7, 19, 21, 31, 57, 93, 133, 217, 399, 589, 651, 1747, 1767, 4123, 5241, 12229, 12369, 33193, 36687, 54157, 99579, 162471, 232351, 379099, 697053, 1028983, 1137297, 3086949, 7202881, 21608643]

約数ペア:

[(1, 21608643), (3, 7202881), (7, 3086949), (19, 1137297), (21, 1028983), (31, 697053), (57, 379099), (93, 232351), (133, 162471), (217, 99579), (399, 54157), (589, 36687), (651, 33193), (1747, 12369), (1767, 12229), (4123, 5241)]