7840280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{28001}}^1$

素因数の和:28019

約数の個数: 32

約数和(自身を含む): 20161440

約数和(自身を除く): 12321160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 28001, 56002, 112004, 140005, 196007, 224008, 280010, 392014, 560020, 784028, 980035, 1120040, 1568056, 1960070, 3920140, 7840280]

約数ペア:

[(1, 7840280), (2, 3920140), (4, 1960070), (5, 1568056), (7, 1120040), (8, 980035), (10, 784028), (14, 560020), (20, 392014), (28, 280010), (35, 224008), (40, 196007), (56, 140005), (70, 112004), (140, 56002), (280, 28001)]