51584080

素因数分解:

$2^4\times 5^1\times {\mathrm{644801}}^1$

素因数の和:644814

約数の個数: 20

約数和(自身を含む): 119933172

約数和(自身を除く): 68349092

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 644801, 1289602, 2579204, 3224005, 5158408, 6448010, 10316816, 12896020, 25792040, 51584080]

約数ペア:

[(1, 51584080), (2, 25792040), (4, 12896020), (5, 10316816), (8, 6448010), (10, 5158408), (16, 3224005), (20, 2579204), (40, 1289602), (80, 644801)]