261520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{467}}^1$

素因数の和:487

約数の個数: 40

約数和(自身を含む): 696384

約数和(自身を除く): 434864

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 467, 560, 934, 1868, 2335, 3269, 3736, 4670, 6538, 7472, 9340, 13076, 16345, 18680, 26152, 32690, 37360, 52304, 65380, 130760, 261520]

約数ペア:

[(1, 261520), (2, 130760), (4, 65380), (5, 52304), (7, 37360), (8, 32690), (10, 26152), (14, 18680), (16, 16345), (20, 13076), (28, 9340), (35, 7472), (40, 6538), (56, 4670), (70, 3736), (80, 3269), (112, 2335), (140, 1868), (280, 934), (467, 560)]