21969104

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{233}}^1$

素因数の和:395

約数の個数: 40

約数和(自身を含む): 43872192

約数和(自身を除く): 21903088

約数列:

[1, 2, 4, 8, 16, 71, 83, 142, 166, 233, 284, 332, 466, 568, 664, 932, 1136, 1328, 1864, 3728, 5893, 11786, 16543, 19339, 23572, 33086, 38678, 47144, 66172, 77356, 94288, 132344, 154712, 264688, 309424, 1373069, 2746138, 5492276, 10984552, 21969104]

約数ペア:

[(1, 21969104), (2, 10984552), (4, 5492276), (8, 2746138), (16, 1373069), (71, 309424), (83, 264688), (142, 154712), (166, 132344), (233, 94288), (284, 77356), (332, 66172), (466, 47144), (568, 38678), (664, 33086), (932, 23572), (1136, 19339), (1328, 16543), (1864, 11786), (3728, 5893)]