66990280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{239251}}^1$

素因数の和:239269

約数の個数: 32

約数和(自身を含む): 172261440

約数和(自身を除く): 105271160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 239251, 478502, 957004, 1196255, 1674757, 1914008, 2392510, 3349514, 4785020, 6699028, 8373785, 9570040, 13398056, 16747570, 33495140, 66990280]

約数ペア:

[(1, 66990280), (2, 33495140), (4, 16747570), (5, 13398056), (7, 9570040), (8, 8373785), (10, 6699028), (14, 4785020), (20, 3349514), (28, 2392510), (35, 1914008), (40, 1674757), (56, 1196255), (70, 957004), (140, 478502), (280, 239251)]