21917560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{78277}}^1$

素因数の和:78295

約数の個数: 32

約数和(自身を含む): 56360160

約数和(自身を除く): 34442600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 78277, 156554, 313108, 391385, 547939, 626216, 782770, 1095878, 1565540, 2191756, 2739695, 3131080, 4383512, 5479390, 10958780, 21917560]

約数ペア:

[(1, 21917560), (2, 10958780), (4, 5479390), (5, 4383512), (7, 3131080), (8, 2739695), (10, 2191756), (14, 1565540), (20, 1095878), (28, 782770), (35, 626216), (40, 547939), (56, 391385), (70, 313108), (140, 156554), (280, 78277)]