21007840

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18757}}^1$

素因数の和:18779

約数の個数: 48

約数和(自身を含む): 56724192

約数和(自身を除く): 35716352

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, 18757, 37514, 75028, 93785, 131299, 150056, 187570, 262598, 300112, 375140, 525196, 600224, 656495, 750280, 1050392, 1312990, 1500560, 2100784, 2625980, 3001120, 4201568, 5251960, 10503920, 21007840]

約数ペア:

[(1, 21007840), (2, 10503920), (4, 5251960), (5, 4201568), (7, 3001120), (8, 2625980), (10, 2100784), (14, 1500560), (16, 1312990), (20, 1050392), (28, 750280), (32, 656495), (35, 600224), (40, 525196), (56, 375140), (70, 300112), (80, 262598), (112, 187570), (140, 150056), (160, 131299), (224, 93785), (280, 75028), (560, 37514), (1120, 18757)]