28536879

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1933}}^1$

素因数の和:1999

約数の個数: 32

約数和(自身を含む): 47034880

約数和(自身を除く): 18498001

約数列:

[1, 3, 7, 19, 21, 37, 57, 111, 133, 259, 399, 703, 777, 1933, 2109, 4921, 5799, 13531, 14763, 36727, 40593, 71521, 110181, 214563, 257089, 500647, 771267, 1358899, 1501941, 4076697, 9512293, 28536879]

約数ペア:

[(1, 28536879), (3, 9512293), (7, 4076697), (19, 1501941), (21, 1358899), (37, 771267), (57, 500647), (111, 257089), (133, 214563), (259, 110181), (399, 71521), (703, 40593), (777, 36727), (1933, 14763), (2109, 13531), (4921, 5799)]