27997480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{99991}}^1$

素因数の和:100009

約数の個数: 32

約数和(自身を含む): 71994240

約数和(自身を除く): 43996760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 99991, 199982, 399964, 499955, 699937, 799928, 999910, 1399874, 1999820, 2799748, 3499685, 3999640, 5599496, 6999370, 13998740, 27997480]

約数ペア:

[(1, 27997480), (2, 13998740), (4, 6999370), (5, 5599496), (7, 3999640), (8, 3499685), (10, 2799748), (14, 1999820), (20, 1399874), (28, 999910), (35, 799928), (40, 699937), (56, 499955), (70, 399964), (140, 199982), (280, 99991)]