206016640

素因数分解:

$2^7\times 5^1\times {\mathrm{321901}}^1$

素因数の和:321920

約数の個数: 32

約数和(自身を含む): 492510060

約数和(自身を除く): 286493420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 321901, 643802, 1287604, 1609505, 2575208, 3219010, 5150416, 6438020, 10300832, 12876040, 20601664, 25752080, 41203328, 51504160, 103008320, 206016640]

約数ペア:

[(1, 206016640), (2, 103008320), (4, 51504160), (5, 41203328), (8, 25752080), (10, 20601664), (16, 12876040), (20, 10300832), (32, 6438020), (40, 5150416), (64, 3219010), (80, 2575208), (128, 1609505), (160, 1287604), (320, 643802), (640, 321901)]