20727495

素因数分解:

$3^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{839}}^1$

素因数の和:917

約数の個数: 40

約数和(自身を含む): 37810080

約数和(自身を除く): 17082585

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 81, 135, 183, 305, 405, 549, 839, 915, 1647, 2517, 2745, 4195, 4941, 7551, 8235, 12585, 22653, 24705, 37755, 51179, 67959, 113265, 153537, 255895, 339795, 460611, 767685, 1381833, 2303055, 4145499, 6909165, 20727495]

約数ペア:

[(1, 20727495), (3, 6909165), (5, 4145499), (9, 2303055), (15, 1381833), (27, 767685), (45, 460611), (61, 339795), (81, 255895), (135, 153537), (183, 113265), (305, 67959), (405, 51179), (549, 37755), (839, 24705), (915, 22653), (1647, 12585), (2517, 8235), (2745, 7551), (4195, 4941)]