81818127

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{397}}^1\times {\mathrm{449}}^1$

素因数の和:872

約数の個数: 32

約数和(自身を含む): 128952000

約数和(自身を除く): 47133873

約数列:

[1, 3, 9, 17, 27, 51, 153, 397, 449, 459, 1191, 1347, 3573, 4041, 6749, 7633, 10719, 12123, 20247, 22899, 60741, 68697, 178253, 182223, 206091, 534759, 1604277, 3030301, 4812831, 9090903, 27272709, 81818127]

約数ペア:

[(1, 81818127), (3, 27272709), (9, 9090903), (17, 4812831), (27, 3030301), (51, 1604277), (153, 534759), (397, 206091), (449, 182223), (459, 178253), (1191, 68697), (1347, 60741), (3573, 22899), (4041, 20247), (6749, 12123), (7633, 10719)]