28605255

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{37}}^2\times {\mathrm{199}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 54028800

約数和(自身を除く): 25423545

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 105, 111, 185, 199, 259, 555, 597, 777, 995, 1295, 1369, 1393, 2985, 3885, 4107, 4179, 6845, 6965, 7363, 9583, 20535, 20895, 22089, 28749, 36815, 47915, 51541, 110445, 143745, 154623, 257705, 272431, 773115, 817293, 1362155, 1907017, 4086465, 5721051, 9535085, 28605255]

約数ペア:

[(1, 28605255), (3, 9535085), (5, 5721051), (7, 4086465), (15, 1907017), (21, 1362155), (35, 817293), (37, 773115), (105, 272431), (111, 257705), (185, 154623), (199, 143745), (259, 110445), (555, 51541), (597, 47915), (777, 36815), (995, 28749), (1295, 22089), (1369, 20895), (1393, 20535), (2985, 9583), (3885, 7363), (4107, 6965), (4179, 6845)]