25729280

素因数分解:

$2^8\times 5^1\times {\mathrm{20101}}^1$

素因数の和:20122

約数の個数: 36

約数和(自身を含む): 61632732

約数和(自身を除く): 35903452

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 20101, 40202, 80404, 100505, 160808, 201010, 321616, 402020, 643232, 804040, 1286464, 1608080, 2572928, 3216160, 5145856, 6432320, 12864640, 25729280]

約数ペア:

[(1, 25729280), (2, 12864640), (4, 6432320), (5, 5145856), (8, 3216160), (10, 2572928), (16, 1608080), (20, 1286464), (32, 804040), (40, 643232), (64, 402020), (80, 321616), (128, 201010), (160, 160808), (256, 100505), (320, 80404), (640, 40202), (1280, 20101)]