19803805

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{337}}^1$

素因数の和:445

約数の個数: 32

約数和(自身を含む): 28813824

約数和(自身を除く): 9010019

約数列:

[1, 5, 7, 23, 35, 73, 115, 161, 337, 365, 511, 805, 1679, 1685, 2359, 2555, 7751, 8395, 11753, 11795, 24601, 38755, 54257, 58765, 123005, 172207, 271285, 565823, 861035, 2829115, 3960761, 19803805]

約数ペア:

[(1, 19803805), (5, 3960761), (7, 2829115), (23, 861035), (35, 565823), (73, 271285), (115, 172207), (161, 123005), (337, 58765), (365, 54257), (511, 38755), (805, 24601), (1679, 11795), (1685, 11753), (2359, 8395), (2555, 7751)]