51226640

素因数分解:

$2^4\times 5^1\times {\mathrm{640333}}^1$

素因数の和:640346

約数の個数: 20

約数和(自身を含む): 119102124

約数和(自身を除く): 67875484

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 640333, 1280666, 2561332, 3201665, 5122664, 6403330, 10245328, 12806660, 25613320, 51226640]

約数ペア:

[(1, 51226640), (2, 25613320), (4, 12806660), (5, 10245328), (8, 6403330), (10, 5122664), (16, 3201665), (20, 2561332), (40, 1280666), (80, 640333)]