28745895

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{811}}^1$

素因数の和:975

約数の個数: 32

約数和(自身を含む): 49109760

約数和(自身を除く): 20363865

約数列:

[1, 3, 5, 15, 17, 51, 85, 139, 255, 417, 695, 811, 2085, 2363, 2433, 4055, 7089, 11815, 12165, 13787, 35445, 41361, 68935, 112729, 206805, 338187, 563645, 1690935, 1916393, 5749179, 9581965, 28745895]

約数ペア:

[(1, 28745895), (3, 9581965), (5, 5749179), (15, 1916393), (17, 1690935), (51, 563645), (85, 338187), (139, 206805), (255, 112729), (417, 68935), (695, 41361), (811, 35445), (2085, 13787), (2363, 12165), (2433, 11815), (4055, 7089)]