20375440

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{5419}}^1$

素因数の和:5479

約数の個数: 40

約数和(自身を含む): 48389760

約数和(自身を除く): 28014320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 5419, 10838, 21676, 27095, 43352, 54190, 86704, 108380, 216760, 254693, 433520, 509386, 1018772, 1273465, 2037544, 2546930, 4075088, 5093860, 10187720, 20375440]

約数ペア:

[(1, 20375440), (2, 10187720), (4, 5093860), (5, 4075088), (8, 2546930), (10, 2037544), (16, 1273465), (20, 1018772), (40, 509386), (47, 433520), (80, 254693), (94, 216760), (188, 108380), (235, 86704), (376, 54190), (470, 43352), (752, 27095), (940, 21676), (1880, 10838), (3760, 5419)]