20249865

素因数分解:

$3^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2459}}^1$

素因数の和:2534

約数の個数: 32

約数和(自身を含む): 36604800

約数和(自身を除く): 16354935

約数列:

[1, 3, 5, 9, 15, 27, 45, 61, 135, 183, 305, 549, 915, 1647, 2459, 2745, 7377, 8235, 12295, 22131, 36885, 66393, 110655, 149999, 331965, 449997, 749995, 1349991, 2249985, 4049973, 6749955, 20249865]

約数ペア:

[(1, 20249865), (3, 6749955), (5, 4049973), (9, 2249985), (15, 1349991), (27, 749995), (45, 449997), (61, 331965), (135, 149999), (183, 110655), (305, 66393), (549, 36885), (915, 22131), (1647, 12295), (2459, 8235), (2745, 7377)]