20556328

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:242

約数の個数: 64

約数和(自身を含む): 44553600

約数和(自身を除く): 23997272

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 101, 103, 104, 152, 202, 206, 247, 404, 412, 494, 808, 824, 988, 1313, 1339, 1919, 1957, 1976, 2626, 2678, 3838, 3914, 5252, 5356, 7676, 7828, 10403, 10504, 10712, 15352, 15656, 20806, 24947, 25441, 41612, 49894, 50882, 83224, 99788, 101764, 135239, 197657, 199576, 203528, 270478, 395314, 540956, 790628, 1081912, 1581256, 2569541, 5139082, 10278164, 20556328]

約数ペア:

[(1, 20556328), (2, 10278164), (4, 5139082), (8, 2569541), (13, 1581256), (19, 1081912), (26, 790628), (38, 540956), (52, 395314), (76, 270478), (101, 203528), (103, 199576), (104, 197657), (152, 135239), (202, 101764), (206, 99788), (247, 83224), (404, 50882), (412, 49894), (494, 41612), (808, 25441), (824, 24947), (988, 20806), (1313, 15656), (1339, 15352), (1919, 10712), (1957, 10504), (1976, 10403), (2626, 7828), (2678, 7676), (3838, 5356), (3914, 5252)]