51543280

素因数分解:

$2^4\times 5^1\times {\mathrm{644291}}^1$

素因数の和:644304

約数の個数: 20

約数和(自身を含む): 119838312

約数和(自身を除く): 68295032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 644291, 1288582, 2577164, 3221455, 5154328, 6442910, 10308656, 12885820, 25771640, 51543280]

約数ペア:

[(1, 51543280), (2, 25771640), (4, 12885820), (5, 10308656), (8, 6442910), (10, 5154328), (16, 3221455), (20, 2577164), (40, 1288582), (80, 644291)]