20981858260

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1097}}^1\times {\mathrm{86939}}^1$

素因数の和:88056

約数の個数: 48

約数和(自身を含む): 48111900480

約数和(自身を除く): 27130042220

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 1097, 2194, 4388, 5485, 10970, 12067, 21940, 24134, 48268, 60335, 86939, 120670, 173878, 241340, 347756, 434695, 869390, 956329, 1738780, 1912658, 3825316, 4781645, 9563290, 19126580, 95372083, 190744166, 381488332, 476860415, 953720830, 1049092913, 1907441660, 2098185826, 4196371652, 5245464565, 10490929130, 20981858260]

約数ペア:

[(1, 20981858260), (2, 10490929130), (4, 5245464565), (5, 4196371652), (10, 2098185826), (11, 1907441660), (20, 1049092913), (22, 953720830), (44, 476860415), (55, 381488332), (110, 190744166), (220, 95372083), (1097, 19126580), (2194, 9563290), (4388, 4781645), (5485, 3825316), (10970, 1912658), (12067, 1738780), (21940, 956329), (24134, 869390), (48268, 434695), (60335, 347756), (86939, 241340), (120670, 173878)]