128713480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{459691}}^1$

素因数の和:459709

約数の個数: 32

約数和(自身を含む): 330978240

約数和(自身を除く): 202264760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 459691, 919382, 1838764, 2298455, 3217837, 3677528, 4596910, 6435674, 9193820, 12871348, 16089185, 18387640, 25742696, 32178370, 64356740, 128713480]

約数ペア:

[(1, 128713480), (2, 64356740), (4, 32178370), (5, 25742696), (7, 18387640), (8, 16089185), (10, 12871348), (14, 9193820), (20, 6435674), (28, 4596910), (35, 3677528), (40, 3217837), (56, 2298455), (70, 1838764), (140, 919382), (280, 459691)]