21306280

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{23159}}^1$

素因数の和:23193

約数の個数: 32

約数和(自身を含む): 50025600

約数和(自身を除く): 28719320

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 23159, 46318, 92636, 115795, 185272, 231590, 463180, 532657, 926360, 1065314, 2130628, 2663285, 4261256, 5326570, 10653140, 21306280]

約数ペア:

[(1, 21306280), (2, 10653140), (4, 5326570), (5, 4261256), (8, 2663285), (10, 2130628), (20, 1065314), (23, 926360), (40, 532657), (46, 463180), (92, 231590), (115, 185272), (184, 115795), (230, 92636), (460, 46318), (920, 23159)]