639380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{4567}}^1$

素因数の和:4583

約数の個数: 24

約数和(自身を含む): 1534848

約数和(自身を除く): 895468

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 4567, 9134, 18268, 22835, 31969, 45670, 63938, 91340, 127876, 159845, 319690, 639380]

約数ペア:

[(1, 639380), (2, 319690), (4, 159845), (5, 127876), (7, 91340), (10, 63938), (14, 45670), (20, 31969), (28, 22835), (35, 18268), (70, 9134), (140, 4567)]