2620940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{193}}^1$

素因数の和:306

約数の個数: 48

約数和(自身を含む): 6388032

約数和(自身を除く): 3767092

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 97, 140, 193, 194, 386, 388, 485, 679, 772, 965, 970, 1351, 1358, 1930, 1940, 2702, 2716, 3395, 3860, 5404, 6755, 6790, 13510, 13580, 18721, 27020, 37442, 74884, 93605, 131047, 187210, 262094, 374420, 524188, 655235, 1310470, 2620940]

約数ペア:

[(1, 2620940), (2, 1310470), (4, 655235), (5, 524188), (7, 374420), (10, 262094), (14, 187210), (20, 131047), (28, 93605), (35, 74884), (70, 37442), (97, 27020), (140, 18721), (193, 13580), (194, 13510), (386, 6790), (388, 6755), (485, 5404), (679, 3860), (772, 3395), (965, 2716), (970, 2702), (1351, 1940), (1358, 1930)]