28643020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1877}}^1$

素因数の和:2002

約数の個数: 48

約数和(自身を含む): 69410880

約数和(自身を除く): 40767860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 109, 140, 218, 436, 545, 763, 1090, 1526, 1877, 2180, 3052, 3754, 3815, 7508, 7630, 9385, 13139, 15260, 18770, 26278, 37540, 52556, 65695, 131390, 204593, 262780, 409186, 818372, 1022965, 1432151, 2045930, 2864302, 4091860, 5728604, 7160755, 14321510, 28643020]

約数ペア:

[(1, 28643020), (2, 14321510), (4, 7160755), (5, 5728604), (7, 4091860), (10, 2864302), (14, 2045930), (20, 1432151), (28, 1022965), (35, 818372), (70, 409186), (109, 262780), (140, 204593), (218, 131390), (436, 65695), (545, 52556), (763, 37540), (1090, 26278), (1526, 18770), (1877, 15260), (2180, 13139), (3052, 9385), (3754, 7630), (3815, 7508)]