21400310

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1\times {\mathrm{263}}^1$

素因数の和:452

約数の個数: 32

約数和(自身を含む): 39536640

約数和(自身を除く): 18136330

約数列:

[1, 2, 5, 10, 79, 103, 158, 206, 263, 395, 515, 526, 790, 1030, 1315, 2630, 8137, 16274, 20777, 27089, 40685, 41554, 54178, 81370, 103885, 135445, 207770, 270890, 2140031, 4280062, 10700155, 21400310]

約数ペア:

[(1, 21400310), (2, 10700155), (5, 4280062), (10, 2140031), (79, 270890), (103, 207770), (158, 135445), (206, 103885), (263, 81370), (395, 54178), (515, 41554), (526, 40685), (790, 27089), (1030, 20777), (1315, 16274), (2630, 8137)]