127712140

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{65831}}^1$

素因数の和:65937

約数の個数: 24

約数和(自身を含む): 270964512

約数和(自身を除く): 143252372

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 65831, 131662, 263324, 329155, 658310, 1316620, 6385607, 12771214, 25542428, 31928035, 63856070, 127712140]

約数ペア:

[(1, 127712140), (2, 63856070), (4, 31928035), (5, 25542428), (10, 12771214), (20, 6385607), (97, 1316620), (194, 658310), (388, 329155), (485, 263324), (970, 131662), (1940, 65831)]