21442281

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{257}}^1$

素因数の和:433

約数の個数: 32

約数和(自身を含む): 34179840

約数和(自身を除く): 12737559

約数列:

[1, 3, 7, 21, 29, 87, 137, 203, 257, 411, 609, 771, 959, 1799, 2877, 3973, 5397, 7453, 11919, 22359, 27811, 35209, 52171, 83433, 105627, 156513, 246463, 739389, 1021061, 3063183, 7147427, 21442281]

約数ペア:

[(1, 21442281), (3, 7147427), (7, 3063183), (21, 1021061), (29, 739389), (87, 246463), (137, 156513), (203, 105627), (257, 83433), (411, 52171), (609, 35209), (771, 27811), (959, 22359), (1799, 11919), (2877, 7453), (3973, 5397)]