178916980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{18913}}^1$

素因数の和:18976

約数の個数: 48

約数和(自身を含む): 419436864

約数和(自身を除く): 240519884

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 430, 473, 860, 946, 1892, 2365, 4730, 9460, 18913, 37826, 75652, 94565, 189130, 208043, 378260, 416086, 813259, 832172, 1040215, 1626518, 2080430, 3253036, 4066295, 4160860, 8132590, 8945849, 16265180, 17891698, 35783396, 44729245, 89458490, 178916980]

約数ペア:

[(1, 178916980), (2, 89458490), (4, 44729245), (5, 35783396), (10, 17891698), (11, 16265180), (20, 8945849), (22, 8132590), (43, 4160860), (44, 4066295), (55, 3253036), (86, 2080430), (110, 1626518), (172, 1040215), (215, 832172), (220, 813259), (430, 416086), (473, 378260), (860, 208043), (946, 189130), (1892, 94565), (2365, 75652), (4730, 37826), (9460, 18913)]