19894700

素因数分解:

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

素因数の和:411

約数の個数: 72

約数和(自身を含む): 50017632

約数和(自身を除く): 30122932

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 97, 100, 140, 175, 194, 293, 350, 388, 485, 586, 679, 700, 970, 1172, 1358, 1465, 1940, 2051, 2425, 2716, 2930, 3395, 4102, 4850, 5860, 6790, 7325, 8204, 9700, 10255, 13580, 14650, 16975, 20510, 28421, 29300, 33950, 41020, 51275, 56842, 67900, 102550, 113684, 142105, 198947, 205100, 284210, 397894, 568420, 710525, 795788, 994735, 1421050, 1989470, 2842100, 3978940, 4973675, 9947350, 19894700]

約数ペア:

[(1, 19894700), (2, 9947350), (4, 4973675), (5, 3978940), (7, 2842100), (10, 1989470), (14, 1421050), (20, 994735), (25, 795788), (28, 710525), (35, 568420), (50, 397894), (70, 284210), (97, 205100), (100, 198947), (140, 142105), (175, 113684), (194, 102550), (293, 67900), (350, 56842), (388, 51275), (485, 41020), (586, 33950), (679, 29300), (700, 28421), (970, 20510), (1172, 16975), (1358, 14650), (1465, 13580), (1940, 10255), (2051, 9700), (2425, 8204), (2716, 7325), (2930, 6790), (3395, 5860), (4102, 4850)]