813040

素因数分解:

$2^4\times 5^1\times {\mathrm{10163}}^1$

素因数の和:10176

約数の個数: 20

約数和(自身を含む): 1890504

約数和(自身を除く): 1077464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 10163, 20326, 40652, 50815, 81304, 101630, 162608, 203260, 406520, 813040]

約数ペア:

[(1, 813040), (2, 406520), (4, 203260), (5, 162608), (8, 101630), (10, 81304), (16, 50815), (20, 40652), (40, 20326), (80, 10163)]