21588021

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{613}}^1$

素因数の和:682

約数の個数: 48

約数和(自身を含む): 39335296

約数和(自身を除く): 17747275

約数列:

[1, 3, 7, 9, 13, 21, 39, 43, 63, 91, 117, 129, 273, 301, 387, 559, 613, 819, 903, 1677, 1839, 2709, 3913, 4291, 5031, 5517, 7969, 11739, 12873, 23907, 26359, 35217, 38619, 55783, 71721, 79077, 167349, 184513, 237231, 342667, 502047, 553539, 1028001, 1660617, 2398669, 3084003, 7196007, 21588021]

約数ペア:

[(1, 21588021), (3, 7196007), (7, 3084003), (9, 2398669), (13, 1660617), (21, 1028001), (39, 553539), (43, 502047), (63, 342667), (91, 237231), (117, 184513), (129, 167349), (273, 79077), (301, 71721), (387, 55783), (559, 38619), (613, 35217), (819, 26359), (903, 23907), (1677, 12873), (1839, 11739), (2709, 7969), (3913, 5517), (4291, 5031)]