19866280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{70951}}^1$

素因数の和:70969

約数の個数: 32

約数和(自身を含む): 51085440

約数和(自身を除く): 31219160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 70951, 141902, 283804, 354755, 496657, 567608, 709510, 993314, 1419020, 1986628, 2483285, 2838040, 3973256, 4966570, 9933140, 19866280]

約数ペア:

[(1, 19866280), (2, 9933140), (4, 4966570), (5, 3973256), (7, 2838040), (8, 2483285), (10, 1986628), (14, 1419020), (20, 993314), (28, 709510), (35, 567608), (40, 496657), (56, 354755), (70, 283804), (140, 141902), (280, 70951)]