51123440

素因数分解:

$2^4\times 5^1\times {\mathrm{639043}}^1$

素因数の和:639056

約数の個数: 20

約数和(自身を含む): 118862184

約数和(自身を除く): 67738744

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 639043, 1278086, 2556172, 3195215, 5112344, 6390430, 10224688, 12780860, 25561720, 51123440]

約数ペア:

[(1, 51123440), (2, 25561720), (4, 12780860), (5, 10224688), (8, 6390430), (10, 5112344), (16, 3195215), (20, 2556172), (40, 1278086), (80, 639043)]