21937461

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{751}}^1$

素因数の和:881

約数の個数: 32

約数和(自身を含む): 36384768

約数和(自身を除く): 14447307

約数列:

[1, 3, 7, 13, 21, 39, 91, 107, 273, 321, 749, 751, 1391, 2247, 2253, 4173, 5257, 9737, 9763, 15771, 29211, 29289, 68341, 80357, 205023, 241071, 562499, 1044641, 1687497, 3133923, 7312487, 21937461]

約数ペア:

[(1, 21937461), (3, 7312487), (7, 3133923), (13, 1687497), (21, 1044641), (39, 562499), (91, 241071), (107, 205023), (273, 80357), (321, 68341), (749, 29289), (751, 29211), (1391, 15771), (2247, 9763), (2253, 9737), (4173, 5257)]