208061720

素因数分解:

$2^3\times 5^1\times {\mathrm{193}}^1\times {\mathrm{26951}}^1$

素因数の和:27155

約数の個数: 32

約数和(自身を含む): 470581920

約数和(自身を除く): 262520200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 193, 386, 772, 965, 1544, 1930, 3860, 7720, 26951, 53902, 107804, 134755, 215608, 269510, 539020, 1078040, 5201543, 10403086, 20806172, 26007715, 41612344, 52015430, 104030860, 208061720]

約数ペア:

[(1, 208061720), (2, 104030860), (4, 52015430), (5, 41612344), (8, 26007715), (10, 20806172), (20, 10403086), (40, 5201543), (193, 1078040), (386, 539020), (772, 269510), (965, 215608), (1544, 134755), (1930, 107804), (3860, 53902), (7720, 26951)]