16800400

素因数分解:

$2^4\times 5^2\times {\mathrm{97}}^1\times {\mathrm{433}}^1$

素因数の和:548

約数の個数: 60

約数和(自身を含む): 40873252

約数和(自身を除く): 24072852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 97, 100, 194, 200, 388, 400, 433, 485, 776, 866, 970, 1552, 1732, 1940, 2165, 2425, 3464, 3880, 4330, 4850, 6928, 7760, 8660, 9700, 10825, 17320, 19400, 21650, 34640, 38800, 42001, 43300, 84002, 86600, 168004, 173200, 210005, 336008, 420010, 672016, 840020, 1050025, 1680040, 2100050, 3360080, 4200100, 8400200, 16800400]

約数ペア:

[(1, 16800400), (2, 8400200), (4, 4200100), (5, 3360080), (8, 2100050), (10, 1680040), (16, 1050025), (20, 840020), (25, 672016), (40, 420010), (50, 336008), (80, 210005), (97, 173200), (100, 168004), (194, 86600), (200, 84002), (388, 43300), (400, 42001), (433, 38800), (485, 34640), (776, 21650), (866, 19400), (970, 17320), (1552, 10825), (1732, 9700), (1940, 8660), (2165, 7760), (2425, 6928), (3464, 4850), (3880, 4330)]