86991140

素因数分解:

$2^2\times 5^1\times {\mathrm{317}}^1\times {\mathrm{13721}}^1$

素因数の和:14047

約数の個数: 24

約数和(自身を含む): 183271032

約数和(自身を除く): 96279892

約数列:

[1, 2, 4, 5, 10, 20, 317, 634, 1268, 1585, 3170, 6340, 13721, 27442, 54884, 68605, 137210, 274420, 4349557, 8699114, 17398228, 21747785, 43495570, 86991140]

約数ペア:

[(1, 86991140), (2, 43495570), (4, 21747785), (5, 17398228), (10, 8699114), (20, 4349557), (317, 274420), (634, 137210), (1268, 68605), (1585, 54884), (3170, 27442), (6340, 13721)]