721128105

素因数分解:

$3^2\times 5^1\times {\mathrm{107}}^1\times {\mathrm{149767}}^1$

素因数の和:149885

約数の個数: 24

約数和(自身を含む): 1261645632

約数和(自身を除く): 540517527

約数列:

[1, 3, 5, 9, 15, 45, 107, 321, 535, 963, 1605, 4815, 149767, 449301, 748835, 1347903, 2246505, 6739515, 16025069, 48075207, 80125345, 144225621, 240376035, 721128105]

約数ペア:

[(1, 721128105), (3, 240376035), (5, 144225621), (9, 80125345), (15, 48075207), (45, 16025069), (107, 6739515), (321, 2246505), (535, 1347903), (963, 748835), (1605, 449301), (4815, 149767)]