990647420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{72949}}^1$

素因数の和:73062

約数の個数: 48

約数和(自身を含む): 2402097600

約数和(自身を除く): 1411450180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 97, 140, 194, 388, 485, 679, 970, 1358, 1940, 2716, 3395, 6790, 13580, 72949, 145898, 291796, 364745, 510643, 729490, 1021286, 1458980, 2042572, 2553215, 5106430, 7076053, 10212860, 14152106, 28304212, 35380265, 49532371, 70760530, 99064742, 141521060, 198129484, 247661855, 495323710, 990647420]

約数ペア:

[(1, 990647420), (2, 495323710), (4, 247661855), (5, 198129484), (7, 141521060), (10, 99064742), (14, 70760530), (20, 49532371), (28, 35380265), (35, 28304212), (70, 14152106), (97, 10212860), (140, 7076053), (194, 5106430), (388, 2553215), (485, 2042572), (679, 1458980), (970, 1021286), (1358, 729490), (1940, 510643), (2716, 364745), (3395, 291796), (6790, 145898), (13580, 72949)]