128203960

素因数分解:

$2^3\times 5^1\times {\mathrm{127}}^1\times {\mathrm{25237}}^1$

素因数の和:25375

約数の個数: 32

約数和(自身を含む): 290741760

約数和(自身を除く): 162537800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 127, 254, 508, 635, 1016, 1270, 2540, 5080, 25237, 50474, 100948, 126185, 201896, 252370, 504740, 1009480, 3205099, 6410198, 12820396, 16025495, 25640792, 32050990, 64101980, 128203960]

約数ペア:

[(1, 128203960), (2, 64101980), (4, 32050990), (5, 25640792), (8, 16025495), (10, 12820396), (20, 6410198), (40, 3205099), (127, 1009480), (254, 504740), (508, 252370), (635, 201896), (1016, 126185), (1270, 100948), (2540, 50474), (5080, 25237)]