19856560

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{5281}}^1$

素因数の和:5341

約数の個数: 40

約数和(自身を含む): 47157696

約数和(自身を除く): 27301136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 5281, 10562, 21124, 26405, 42248, 52810, 84496, 105620, 211240, 248207, 422480, 496414, 992828, 1241035, 1985656, 2482070, 3971312, 4964140, 9928280, 19856560]

約数ペア:

[(1, 19856560), (2, 9928280), (4, 4964140), (5, 3971312), (8, 2482070), (10, 1985656), (16, 1241035), (20, 992828), (40, 496414), (47, 422480), (80, 248207), (94, 211240), (188, 105620), (235, 84496), (376, 52810), (470, 42248), (752, 26405), (940, 21124), (1880, 10562), (3760, 5281)]