28064820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{66821}}^1$

素因数の和:66840

約数の個数: 48

約数和(自身を含む): 89808768

約数和(自身を除く): 61743948

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 66821, 133642, 200463, 267284, 334105, 400926, 467747, 668210, 801852, 935494, 1002315, 1336420, 1403241, 1870988, 2004630, 2338735, 2806482, 4009260, 4677470, 5612964, 7016205, 9354940, 14032410, 28064820]

約数ペア:

[(1, 28064820), (2, 14032410), (3, 9354940), (4, 7016205), (5, 5612964), (6, 4677470), (7, 4009260), (10, 2806482), (12, 2338735), (14, 2004630), (15, 1870988), (20, 1403241), (21, 1336420), (28, 1002315), (30, 935494), (35, 801852), (42, 668210), (60, 467747), (70, 400926), (84, 334105), (105, 267284), (140, 200463), (210, 133642), (420, 66821)]