21131026

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1\times {\mathrm{269}}^1$

素因数の和:490

約数の個数: 32

約数和(自身を含む): 37739520

約数和(自身を除く): 16608494

約数列:

[1, 2, 7, 14, 31, 62, 181, 217, 269, 362, 434, 538, 1267, 1883, 2534, 3766, 5611, 8339, 11222, 16678, 39277, 48689, 58373, 78554, 97378, 116746, 340823, 681646, 1509359, 3018718, 10565513, 21131026]

約数ペア:

[(1, 21131026), (2, 10565513), (7, 3018718), (14, 1509359), (31, 681646), (62, 340823), (181, 116746), (217, 97378), (269, 78554), (362, 58373), (434, 48689), (538, 39277), (1267, 16678), (1883, 11222), (2534, 8339), (3766, 5611)]