87490120

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{22549}}^1$

素因数の和:22657

約数の個数: 32

約数和(自身を含む): 198891000

約数和(自身を除く): 111400880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 22549, 45098, 90196, 112745, 180392, 225490, 450980, 901960, 2187253, 4374506, 8749012, 10936265, 17498024, 21872530, 43745060, 87490120]

約数ペア:

[(1, 87490120), (2, 43745060), (4, 21872530), (5, 17498024), (8, 10936265), (10, 8749012), (20, 4374506), (40, 2187253), (97, 901960), (194, 450980), (388, 225490), (485, 180392), (776, 112745), (970, 90196), (1940, 45098), (3880, 22549)]