19996795

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{619}}^1$

素因数の和:715

約数の個数: 32

約数和(自身を含む): 29998080

約数和(自身を除く): 10001285

約数列:

[1, 5, 7, 13, 35, 65, 71, 91, 355, 455, 497, 619, 923, 2485, 3095, 4333, 4615, 6461, 8047, 21665, 32305, 40235, 43949, 56329, 219745, 281645, 307643, 571337, 1538215, 2856685, 3999359, 19996795]

約数ペア:

[(1, 19996795), (5, 3999359), (7, 2856685), (13, 1538215), (35, 571337), (65, 307643), (71, 281645), (91, 219745), (355, 56329), (455, 43949), (497, 40235), (619, 32305), (923, 21665), (2485, 8047), (3095, 6461), (4333, 4615)]