257516140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1839401}}^1$

素因数の和:1839417

約数の個数: 24

約数和(自身を含む): 618039072

約数和(自身を除く): 360522932

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1839401, 3678802, 7357604, 9197005, 12875807, 18394010, 25751614, 36788020, 51503228, 64379035, 128758070, 257516140]

約数ペア:

[(1, 257516140), (2, 128758070), (4, 64379035), (5, 51503228), (7, 36788020), (10, 25751614), (14, 18394010), (20, 12875807), (28, 9197005), (35, 7357604), (70, 3678802), (140, 1839401)]