21493461

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{12289}}^1$

素因数の和:12356

約数の個数: 16

約数和(自身を含む): 31855680

約数和(自身を除く): 10362219

約数列:

[1, 3, 11, 33, 53, 159, 583, 1749, 12289, 36867, 135179, 405537, 651317, 1953951, 7164487, 21493461]

約数ペア:

[(1, 21493461), (3, 7164487), (11, 1953951), (33, 651317), (53, 405537), (159, 135179), (583, 36867), (1749, 12289)]