20321691

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1$

素因数の和:307

約数の個数: 32

約数和(自身を含む): 30481920

約数和(自身を除く): 10160229

約数列:

[1, 3, 13, 39, 41, 71, 123, 179, 213, 533, 537, 923, 1599, 2327, 2769, 2911, 6981, 7339, 8733, 12709, 22017, 37843, 38127, 95407, 113529, 165217, 286221, 495651, 521069, 1563207, 6773897, 20321691]

約数ペア:

[(1, 20321691), (3, 6773897), (13, 1563207), (39, 521069), (41, 495651), (71, 286221), (123, 165217), (179, 113529), (213, 95407), (533, 38127), (537, 37843), (923, 22017), (1599, 12709), (2327, 8733), (2769, 7339), (2911, 6981)]