28180815

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{8501}}^1$

素因数の和:8539

約数の個数: 32

約数和(自身を含む): 51420096

約数和(自身を除く): 23239281

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 195, 221, 255, 663, 1105, 3315, 8501, 25503, 42505, 110513, 127515, 144517, 331539, 433551, 552565, 722585, 1657695, 1878721, 2167755, 5636163, 9393605, 28180815]

約数ペア:

[(1, 28180815), (3, 9393605), (5, 5636163), (13, 2167755), (15, 1878721), (17, 1657695), (39, 722585), (51, 552565), (65, 433551), (85, 331539), (195, 144517), (221, 127515), (255, 110513), (663, 42505), (1105, 25503), (3315, 8501)]