19406450

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{89}}^2$

素因数の和:204

約数の個数: 54

約数和(自身を含む): 42466311

約数和(自身を除く): 23059861

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 49, 50, 70, 89, 98, 175, 178, 245, 350, 445, 490, 623, 890, 1225, 1246, 2225, 2450, 3115, 4361, 4450, 6230, 7921, 8722, 15575, 15842, 21805, 31150, 39605, 43610, 55447, 79210, 109025, 110894, 198025, 218050, 277235, 388129, 396050, 554470, 776258, 1386175, 1940645, 2772350, 3881290, 9703225, 19406450]

約数ペア:

[(1, 19406450), (2, 9703225), (5, 3881290), (7, 2772350), (10, 1940645), (14, 1386175), (25, 776258), (35, 554470), (49, 396050), (50, 388129), (70, 277235), (89, 218050), (98, 198025), (175, 110894), (178, 109025), (245, 79210), (350, 55447), (445, 43610), (490, 39605), (623, 31150), (890, 21805), (1225, 15842), (1246, 15575), (2225, 8722), (2450, 7921), (3115, 6230), (4361, 4450)]