21909520

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{5827}}^1$

素因数の和:5887

約数の個数: 40

約数和(自身を含む): 52032384

約数和(自身を除く): 30122864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 5827, 11654, 23308, 29135, 46616, 58270, 93232, 116540, 233080, 273869, 466160, 547738, 1095476, 1369345, 2190952, 2738690, 4381904, 5477380, 10954760, 21909520]

約数ペア:

[(1, 21909520), (2, 10954760), (4, 5477380), (5, 4381904), (8, 2738690), (10, 2190952), (16, 1369345), (20, 1095476), (40, 547738), (47, 466160), (80, 273869), (94, 233080), (188, 116540), (235, 93232), (376, 58270), (470, 46616), (752, 29135), (940, 23308), (1880, 11654), (3760, 5827)]