19880060

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{21149}}^1$

素因数の和:21205

約数の個数: 24

約数和(自身を含む): 42638400

約数和(自身を除く): 22758340

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 470, 940, 21149, 42298, 84596, 105745, 211490, 422980, 994003, 1988006, 3976012, 4970015, 9940030, 19880060]

約数ペア:

[(1, 19880060), (2, 9940030), (4, 4970015), (5, 3976012), (10, 1988006), (20, 994003), (47, 422980), (94, 211490), (188, 105745), (235, 84596), (470, 42298), (940, 21149)]