15981520

素因数分解:

$2^4\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1867}}^1$

素因数の和:1987

約数の個数: 40

約数和(自身を含む): 37524384

約数和(自身を除く): 21542864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 107, 214, 428, 535, 856, 1070, 1712, 1867, 2140, 3734, 4280, 7468, 8560, 9335, 14936, 18670, 29872, 37340, 74680, 149360, 199769, 399538, 799076, 998845, 1598152, 1997690, 3196304, 3995380, 7990760, 15981520]

約数ペア:

[(1, 15981520), (2, 7990760), (4, 3995380), (5, 3196304), (8, 1997690), (10, 1598152), (16, 998845), (20, 799076), (40, 399538), (80, 199769), (107, 149360), (214, 74680), (428, 37340), (535, 29872), (856, 18670), (1070, 14936), (1712, 9335), (1867, 8560), (2140, 7468), (3734, 4280)]