20913178

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{881}}^1$

素因数の和:990

約数の個数: 32

約数和(自身を含む): 37340352

約数和(自身を除く): 16427174

約数列:

[1, 2, 11, 13, 22, 26, 83, 143, 166, 286, 881, 913, 1079, 1762, 1826, 2158, 9691, 11453, 11869, 19382, 22906, 23738, 73123, 125983, 146246, 251966, 804353, 950599, 1608706, 1901198, 10456589, 20913178]

約数ペア:

[(1, 20913178), (2, 10456589), (11, 1901198), (13, 1608706), (22, 950599), (26, 804353), (83, 251966), (143, 146246), (166, 125983), (286, 73123), (881, 23738), (913, 22906), (1079, 19382), (1762, 11869), (1826, 11453), (2158, 9691)]