81361400

素因数分解:

$2^3\times 5^2\times {\mathrm{406807}}^1$

素因数の和:406823

約数の個数: 24

約数和(自身を含む): 189165720

約数和(自身を除く): 107804320

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 406807, 813614, 1627228, 2034035, 3254456, 4068070, 8136140, 10170175, 16272280, 20340350, 40680700, 81361400]

約数ペア:

[(1, 81361400), (2, 40680700), (4, 20340350), (5, 16272280), (8, 10170175), (10, 8136140), (20, 4068070), (25, 3254456), (40, 2034035), (50, 1627228), (100, 813614), (200, 406807)]