18937295

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{73}}^1\times {\mathrm{307}}^1$

素因数の和:411

約数の個数: 24

約数和(自身を含む): 25025616

約数和(自身を除く): 6088321

約数列:

[1, 5, 13, 65, 73, 169, 307, 365, 845, 949, 1535, 3991, 4745, 12337, 19955, 22411, 51883, 61685, 112055, 259415, 291343, 1456715, 3787459, 18937295]

約数ペア:

[(1, 18937295), (5, 3787459), (13, 1456715), (65, 291343), (73, 259415), (169, 112055), (307, 61685), (365, 51883), (845, 22411), (949, 19955), (1535, 12337), (3991, 4745)]