20189954840

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1601}}^1\times {\mathrm{28661}}^1$

素因数の和:30284

約数の個数: 64

約数和(自身を含む): 49589845920

約数和(自身を除く): 29399891080

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 1601, 3202, 6404, 8005, 12808, 16010, 17611, 28661, 32020, 35222, 57322, 64040, 70444, 88055, 114644, 140888, 143305, 176110, 229288, 286610, 315271, 352220, 573220, 630542, 704440, 1146440, 1261084, 1576355, 2522168, 3152710, 6305420, 12610840, 45886261, 91772522, 183545044, 229431305, 367090088, 458862610, 504748871, 917725220, 1009497742, 1835450440, 2018995484, 2523744355, 4037990968, 5047488710, 10094977420, 20189954840]

約数ペア:

[(1, 20189954840), (2, 10094977420), (4, 5047488710), (5, 4037990968), (8, 2523744355), (10, 2018995484), (11, 1835450440), (20, 1009497742), (22, 917725220), (40, 504748871), (44, 458862610), (55, 367090088), (88, 229431305), (110, 183545044), (220, 91772522), (440, 45886261), (1601, 12610840), (3202, 6305420), (6404, 3152710), (8005, 2522168), (12808, 1576355), (16010, 1261084), (17611, 1146440), (28661, 704440), (32020, 630542), (35222, 573220), (57322, 352220), (64040, 315271), (70444, 286610), (88055, 229288), (114644, 176110), (140888, 143305)]