19916720

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{5297}}^1$

素因数の和:5357

約数の個数: 40

約数和(自身を含む): 47300544

約数和(自身を除く): 27383824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 5297, 10594, 21188, 26485, 42376, 52970, 84752, 105940, 211880, 248959, 423760, 497918, 995836, 1244795, 1991672, 2489590, 3983344, 4979180, 9958360, 19916720]

約数ペア:

[(1, 19916720), (2, 9958360), (4, 4979180), (5, 3983344), (8, 2489590), (10, 1991672), (16, 1244795), (20, 995836), (40, 497918), (47, 423760), (80, 248959), (94, 211880), (188, 105940), (235, 84752), (376, 52970), (470, 42376), (752, 26485), (940, 21188), (1880, 10594), (3760, 5297)]