21331490

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^3\times {\mathrm{311}}^1$

素因数の和:375

約数の個数: 32

約数和(自身を含む): 40659840

約数和(自身を除く): 19328350

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 311, 361, 622, 722, 1555, 1805, 3110, 3610, 5909, 6859, 11818, 13718, 29545, 34295, 59090, 68590, 112271, 224542, 561355, 1122710, 2133149, 4266298, 10665745, 21331490]

約数ペア:

[(1, 21331490), (2, 10665745), (5, 4266298), (10, 2133149), (19, 1122710), (38, 561355), (95, 224542), (190, 112271), (311, 68590), (361, 59090), (622, 34295), (722, 29545), (1555, 13718), (1805, 11818), (3110, 6859), (3610, 5909)]