12864640

素因数分解:

$2^7\times 5^1\times {\mathrm{20101}}^1$

素因数の和:20120

約数の個数: 32

約数和(自身を含む): 30756060

約数和(自身を除く): 17891420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 20101, 40202, 80404, 100505, 160808, 201010, 321616, 402020, 643232, 804040, 1286464, 1608080, 2572928, 3216160, 6432320, 12864640]

約数ペア:

[(1, 12864640), (2, 6432320), (4, 3216160), (5, 2572928), (8, 1608080), (10, 1286464), (16, 804040), (20, 643232), (32, 402020), (40, 321616), (64, 201010), (80, 160808), (128, 100505), (160, 80404), (320, 40202), (640, 20101)]