28870989

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{509}}^1$

素因数の和:629

約数の個数: 32

約数和(自身を含む): 45891840

約数和(自身を除く): 17020851

約数列:

[1, 3, 7, 21, 37, 73, 111, 219, 259, 509, 511, 777, 1527, 1533, 2701, 3563, 8103, 10689, 18833, 18907, 37157, 56499, 56721, 111471, 131831, 260099, 395493, 780297, 1374809, 4124427, 9623663, 28870989]

約数ペア:

[(1, 28870989), (3, 9623663), (7, 4124427), (21, 1374809), (37, 780297), (73, 395493), (111, 260099), (219, 131831), (259, 111471), (509, 56721), (511, 56499), (777, 37157), (1527, 18907), (1533, 18833), (2701, 10689), (3563, 8103)]