20085181840

素因数分解:

$2^4\times 5^1\times {\mathrm{223}}^1\times {\mathrm{677}}^1\times {\mathrm{1663}}^1$

素因数の和:2576

約数の個数: 80

約数和(自身を含む): 47004991488

約数和(自身を除く): 26919809648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 677, 892, 1115, 1354, 1663, 1784, 2230, 2708, 3326, 3385, 3568, 4460, 5416, 6652, 6770, 8315, 8920, 10832, 13304, 13540, 16630, 17840, 26608, 27080, 33260, 54160, 66520, 133040, 150971, 301942, 370849, 603884, 741698, 754855, 1125851, 1207768, 1483396, 1509710, 1854245, 2251702, 2415536, 2966792, 3019420, 3708490, 4503404, 5629255, 5933584, 6038840, 7416980, 9006808, 11258510, 12077680, 14833960, 18013616, 22517020, 29667920, 45034040, 90068080, 251064773, 502129546, 1004259092, 1255323865, 2008518184, 2510647730, 4017036368, 5021295460, 10042590920, 20085181840]

約数ペア:

[(1, 20085181840), (2, 10042590920), (4, 5021295460), (5, 4017036368), (8, 2510647730), (10, 2008518184), (16, 1255323865), (20, 1004259092), (40, 502129546), (80, 251064773), (223, 90068080), (446, 45034040), (677, 29667920), (892, 22517020), (1115, 18013616), (1354, 14833960), (1663, 12077680), (1784, 11258510), (2230, 9006808), (2708, 7416980), (3326, 6038840), (3385, 5933584), (3568, 5629255), (4460, 4503404), (5416, 3708490), (6652, 3019420), (6770, 2966792), (8315, 2415536), (8920, 2251702), (10832, 1854245), (13304, 1509710), (13540, 1483396), (16630, 1207768), (17840, 1125851), (26608, 754855), (27080, 741698), (33260, 603884), (54160, 370849), (66520, 301942), (133040, 150971)]