19738355

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:156

約数の個数: 48

約数和(自身を含む): 30357504

約数和(自身を除く): 10619149

約数列:

[1, 5, 7, 13, 35, 47, 65, 71, 91, 169, 235, 329, 355, 455, 497, 611, 845, 923, 1183, 1645, 2485, 3055, 3337, 4277, 4615, 5915, 6461, 7943, 11999, 16685, 21385, 23359, 32305, 39715, 43381, 55601, 59995, 83993, 116795, 216905, 278005, 303667, 419965, 563953, 1518335, 2819765, 3947671, 19738355]

約数ペア:

[(1, 19738355), (5, 3947671), (7, 2819765), (13, 1518335), (35, 563953), (47, 419965), (65, 303667), (71, 278005), (91, 216905), (169, 116795), (235, 83993), (329, 59995), (355, 55601), (455, 43381), (497, 39715), (611, 32305), (845, 23359), (923, 21385), (1183, 16685), (1645, 11999), (2485, 7943), (3055, 6461), (3337, 5915), (4277, 4615)]