21037700

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{2663}}^1$

素因数の和:2756

約数の個数: 36

約数和(自身を含む): 46247040

約数和(自身を除く): 25209340

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 2663, 3950, 5326, 7900, 10652, 13315, 26630, 53260, 66575, 133150, 210377, 266300, 420754, 841508, 1051885, 2103770, 4207540, 5259425, 10518850, 21037700]

約数ペア:

[(1, 21037700), (2, 10518850), (4, 5259425), (5, 4207540), (10, 2103770), (20, 1051885), (25, 841508), (50, 420754), (79, 266300), (100, 210377), (158, 133150), (316, 66575), (395, 53260), (790, 26630), (1580, 13315), (1975, 10652), (2663, 7900), (3950, 5326)]