398962900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{81421}}^1$

素因数の和:81449

約数の個数: 54

約数和(自身を含む): 1007108718

約数和(自身を除く): 608145818

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 4900, 81421, 162842, 325684, 407105, 569947, 814210, 1139894, 1628420, 2035525, 2279788, 2849735, 3989629, 4071050, 5699470, 7979258, 8142100, 11398940, 14248675, 15958516, 19948145, 28497350, 39896290, 56994700, 79792580, 99740725, 199481450, 398962900]

約数ペア:

[(1, 398962900), (2, 199481450), (4, 99740725), (5, 79792580), (7, 56994700), (10, 39896290), (14, 28497350), (20, 19948145), (25, 15958516), (28, 14248675), (35, 11398940), (49, 8142100), (50, 7979258), (70, 5699470), (98, 4071050), (100, 3989629), (140, 2849735), (175, 2279788), (196, 2035525), (245, 1628420), (350, 1139894), (490, 814210), (700, 569947), (980, 407105), (1225, 325684), (2450, 162842), (4900, 81421)]