21083020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{3673}}^1$

素因数の和:3730

約数の個数: 48

約数和(自身を含む): 51847488

約数和(自身を除く): 30764468

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 140, 164, 205, 287, 410, 574, 820, 1148, 1435, 2870, 3673, 5740, 7346, 14692, 18365, 25711, 36730, 51422, 73460, 102844, 128555, 150593, 257110, 301186, 514220, 602372, 752965, 1054151, 1505930, 2108302, 3011860, 4216604, 5270755, 10541510, 21083020]

約数ペア:

[(1, 21083020), (2, 10541510), (4, 5270755), (5, 4216604), (7, 3011860), (10, 2108302), (14, 1505930), (20, 1054151), (28, 752965), (35, 602372), (41, 514220), (70, 301186), (82, 257110), (140, 150593), (164, 128555), (205, 102844), (287, 73460), (410, 51422), (574, 36730), (820, 25711), (1148, 18365), (1435, 14692), (2870, 7346), (3673, 5740)]