3978940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{293}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 9680832

約数和(自身を除く): 5701892

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 97, 140, 194, 293, 388, 485, 586, 679, 970, 1172, 1358, 1465, 1940, 2051, 2716, 2930, 3395, 4102, 5860, 6790, 8204, 10255, 13580, 20510, 28421, 41020, 56842, 113684, 142105, 198947, 284210, 397894, 568420, 795788, 994735, 1989470, 3978940]

約数ペア:

[(1, 3978940), (2, 1989470), (4, 994735), (5, 795788), (7, 568420), (10, 397894), (14, 284210), (20, 198947), (28, 142105), (35, 113684), (70, 56842), (97, 41020), (140, 28421), (194, 20510), (293, 13580), (388, 10255), (485, 8204), (586, 6790), (679, 5860), (970, 4102), (1172, 3395), (1358, 2930), (1465, 2716), (1940, 2051)]