87845140

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{45281}}^1$

素因数の和:45387

約数の個数: 24

約数和(自身を含む): 186380712

約数和(自身を除く): 98535572

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 45281, 90562, 181124, 226405, 452810, 905620, 4392257, 8784514, 17569028, 21961285, 43922570, 87845140]

約数ペア:

[(1, 87845140), (2, 43922570), (4, 21961285), (5, 17569028), (10, 8784514), (20, 4392257), (97, 905620), (194, 452810), (388, 226405), (485, 181124), (970, 90562), (1940, 45281)]