638680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{2281}}^1$

素因数の和:2299

約数の個数: 32

約数和(自身を含む): 1643040

約数和(自身を除く): 1004360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 2281, 4562, 9124, 11405, 15967, 18248, 22810, 31934, 45620, 63868, 79835, 91240, 127736, 159670, 319340, 638680]

約数ペア:

[(1, 638680), (2, 319340), (4, 159670), (5, 127736), (7, 91240), (8, 79835), (10, 63868), (14, 45620), (20, 31934), (28, 22810), (35, 18248), (40, 15967), (56, 11405), (70, 9124), (140, 4562), (280, 2281)]