19504880

素因数分解:

$2^4\times 5^1\times {\mathrm{479}}^1\times {\mathrm{509}}^1$

素因数の和:1001

約数の個数: 40

約数和(自身を含む): 45532800

約数和(自身を除く): 26027920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 479, 509, 958, 1018, 1916, 2036, 2395, 2545, 3832, 4072, 4790, 5090, 7664, 8144, 9580, 10180, 19160, 20360, 38320, 40720, 243811, 487622, 975244, 1219055, 1950488, 2438110, 3900976, 4876220, 9752440, 19504880]

約数ペア:

[(1, 19504880), (2, 9752440), (4, 4876220), (5, 3900976), (8, 2438110), (10, 1950488), (16, 1219055), (20, 975244), (40, 487622), (80, 243811), (479, 40720), (509, 38320), (958, 20360), (1018, 19160), (1916, 10180), (2036, 9580), (2395, 8144), (2545, 7664), (3832, 5090), (4072, 4790)]