21405348

素因数分解:

$2^2\times 3^2\times {\mathrm{647}}^1\times {\mathrm{919}}^1$

素因数の和:1576

約数の個数: 36

約数和(自身を含む): 54250560

約数和(自身を除く): 32845212

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 647, 919, 1294, 1838, 1941, 2588, 2757, 3676, 3882, 5514, 5823, 7764, 8271, 11028, 11646, 16542, 23292, 33084, 594593, 1189186, 1783779, 2378372, 3567558, 5351337, 7135116, 10702674, 21405348]

約数ペア:

[(1, 21405348), (2, 10702674), (3, 7135116), (4, 5351337), (6, 3567558), (9, 2378372), (12, 1783779), (18, 1189186), (36, 594593), (647, 33084), (919, 23292), (1294, 16542), (1838, 11646), (1941, 11028), (2588, 8271), (2757, 7764), (3676, 5823), (3882, 5514)]