28621863

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{491}}^1$

素因数の和:644

約数の個数: 32

約数和(自身を含む): 45342720

約数和(自身を除く): 16720857

約数列:

[1, 3, 9, 17, 27, 51, 127, 153, 381, 459, 491, 1143, 1473, 2159, 3429, 4419, 6477, 8347, 13257, 19431, 25041, 58293, 62357, 75123, 187071, 225369, 561213, 1060069, 1683639, 3180207, 9540621, 28621863]

約数ペア:

[(1, 28621863), (3, 9540621), (9, 3180207), (17, 1683639), (27, 1060069), (51, 561213), (127, 225369), (153, 187071), (381, 75123), (459, 62357), (491, 58293), (1143, 25041), (1473, 19431), (2159, 13257), (3429, 8347), (4419, 6477)]