20744240

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{2143}}^1$

素因数の和:2178

約数の個数: 60

約数和(自身を含む): 53038272

約数和(自身を除く): 32294032

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 121, 176, 220, 242, 440, 484, 605, 880, 968, 1210, 1936, 2143, 2420, 4286, 4840, 8572, 9680, 10715, 17144, 21430, 23573, 34288, 42860, 47146, 85720, 94292, 117865, 171440, 188584, 235730, 259303, 377168, 471460, 518606, 942920, 1037212, 1296515, 1885840, 2074424, 2593030, 4148848, 5186060, 10372120, 20744240]

約数ペア:

[(1, 20744240), (2, 10372120), (4, 5186060), (5, 4148848), (8, 2593030), (10, 2074424), (11, 1885840), (16, 1296515), (20, 1037212), (22, 942920), (40, 518606), (44, 471460), (55, 377168), (80, 259303), (88, 235730), (110, 188584), (121, 171440), (176, 117865), (220, 94292), (242, 85720), (440, 47146), (484, 42860), (605, 34288), (880, 23573), (968, 21430), (1210, 17144), (1936, 10715), (2143, 9680), (2420, 8572), (4286, 4840)]