81721620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{454009}}^1$

素因数の和:454024

約数の個数: 36

約数和(自身を含む): 247889460

約数和(自身を除く): 166167840

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 454009, 908018, 1362027, 1816036, 2270045, 2724054, 4086081, 4540090, 5448108, 6810135, 8172162, 9080180, 13620270, 16344324, 20430405, 27240540, 40860810, 81721620]

約数ペア:

[(1, 81721620), (2, 40860810), (3, 27240540), (4, 20430405), (5, 16344324), (6, 13620270), (9, 9080180), (10, 8172162), (12, 6810135), (15, 5448108), (18, 4540090), (20, 4086081), (30, 2724054), (36, 2270045), (45, 1816036), (60, 1362027), (90, 908018), (180, 454009)]