28871241

素因数分解:

$3^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{10337}}^1$

素因数の和:10373

約数の個数: 24

約数和(自身を含む): 47141280

約数和(自身を除く): 18270039

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 931, 2793, 10337, 31011, 72359, 196403, 217077, 506513, 589209, 1374821, 1519539, 4124463, 9623747, 28871241]

約数ペア:

[(1, 28871241), (3, 9623747), (7, 4124463), (19, 1519539), (21, 1374821), (49, 589209), (57, 506513), (133, 217077), (147, 196403), (399, 72359), (931, 31011), (2793, 10337)]