20665120

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18451}}^1$

素因数の和:18473

約数の個数: 48

約数和(自身を含む): 55798848

約数和(自身を除く): 35133728

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18451, 36902, 73804, 92255, 129157, 147608, 184510, 258314, 295216, 369020, 516628, 590432, 645785, 738040, 1033256, 1291570, 1476080, 2066512, 2583140, 2952160, 4133024, 5166280, 10332560, 20665120]

約数ペア:

[(1, 20665120), (2, 10332560), (4, 5166280), (5, 4133024), (7, 2952160), (8, 2583140), (10, 2066512), (14, 1476080), (16, 1291570), (20, 1033256), (28, 738040), (32, 645785), (35, 590432), (40, 516628), (56, 369020), (70, 295216), (80, 258314), (112, 184510), (140, 147608), (160, 129157), (224, 92255), (280, 73804), (560, 36902), (1120, 18451)]