279972880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{4481}}^1$

素因数の和:4576

約数の個数: 80

約数和(自身を含む): 720275328

約数和(自身を除く): 440302448

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 71, 80, 88, 110, 142, 176, 220, 284, 355, 440, 568, 710, 781, 880, 1136, 1420, 1562, 2840, 3124, 3905, 4481, 5680, 6248, 7810, 8962, 12496, 15620, 17924, 22405, 31240, 35848, 44810, 49291, 62480, 71696, 89620, 98582, 179240, 197164, 246455, 318151, 358480, 394328, 492910, 636302, 788656, 985820, 1272604, 1590755, 1971640, 2545208, 3181510, 3499661, 3943280, 5090416, 6363020, 6999322, 12726040, 13998644, 17498305, 25452080, 27997288, 34996610, 55994576, 69993220, 139986440, 279972880]

約数ペア:

[(1, 279972880), (2, 139986440), (4, 69993220), (5, 55994576), (8, 34996610), (10, 27997288), (11, 25452080), (16, 17498305), (20, 13998644), (22, 12726040), (40, 6999322), (44, 6363020), (55, 5090416), (71, 3943280), (80, 3499661), (88, 3181510), (110, 2545208), (142, 1971640), (176, 1590755), (220, 1272604), (284, 985820), (355, 788656), (440, 636302), (568, 492910), (710, 394328), (781, 358480), (880, 318151), (1136, 246455), (1420, 197164), (1562, 179240), (2840, 98582), (3124, 89620), (3905, 71696), (4481, 62480), (5680, 49291), (6248, 44810), (7810, 35848), (8962, 31240), (12496, 22405), (15620, 17924)]