20409285

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:214

約数の個数: 48

約数和(自身を含む): 36154944

約数和(自身を除く): 15745659

約数列:

[1, 3, 5, 13, 15, 39, 65, 83, 97, 169, 195, 249, 291, 415, 485, 507, 845, 1079, 1245, 1261, 1455, 2535, 3237, 3783, 5395, 6305, 8051, 14027, 16185, 16393, 18915, 24153, 40255, 42081, 49179, 70135, 81965, 104663, 120765, 210405, 245895, 313989, 523315, 1360619, 1569945, 4081857, 6803095, 20409285]

約数ペア:

[(1, 20409285), (3, 6803095), (5, 4081857), (13, 1569945), (15, 1360619), (39, 523315), (65, 313989), (83, 245895), (97, 210405), (169, 120765), (195, 104663), (249, 81965), (291, 70135), (415, 49179), (485, 42081), (507, 40255), (845, 24153), (1079, 18915), (1245, 16393), (1261, 16185), (1455, 14027), (2535, 8051), (3237, 6305), (3783, 5395)]