1216640

素因数分解:

$2^7\times 5^1\times {\mathrm{1901}}^1$

素因数の和:1920

約数の個数: 32

約数和(自身を含む): 2910060

約数和(自身を除く): 1693420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 1901, 3802, 7604, 9505, 15208, 19010, 30416, 38020, 60832, 76040, 121664, 152080, 243328, 304160, 608320, 1216640]

約数ペア:

[(1, 1216640), (2, 608320), (4, 304160), (5, 243328), (8, 152080), (10, 121664), (16, 76040), (20, 60832), (32, 38020), (40, 30416), (64, 19010), (80, 15208), (128, 9505), (160, 7604), (320, 3802), (640, 1901)]