16991440

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{4519}}^1$

素因数の和:4579

約数の個数: 40

約数和(自身を含む): 40354560

約数和(自身を除く): 23363120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 470, 752, 940, 1880, 3760, 4519, 9038, 18076, 22595, 36152, 45190, 72304, 90380, 180760, 212393, 361520, 424786, 849572, 1061965, 1699144, 2123930, 3398288, 4247860, 8495720, 16991440]

約数ペア:

[(1, 16991440), (2, 8495720), (4, 4247860), (5, 3398288), (8, 2123930), (10, 1699144), (16, 1061965), (20, 849572), (40, 424786), (47, 361520), (80, 212393), (94, 180760), (188, 90380), (235, 72304), (376, 45190), (470, 36152), (752, 22595), (940, 18076), (1880, 9038), (3760, 4519)]