161888888

素因数分解:

$2^3\times 7^1\times {\mathrm{73}}^1\times {\mathrm{199}}^2$

素因数の和:484

約数の個数: 48

約数和(自身を含む): 353432880

約数和(自身を除く): 191543992

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 73, 146, 199, 292, 398, 511, 584, 796, 1022, 1393, 1592, 2044, 2786, 4088, 5572, 11144, 14527, 29054, 39601, 58108, 79202, 101689, 116216, 158404, 203378, 277207, 316808, 406756, 554414, 813512, 1108828, 2217656, 2890873, 5781746, 11563492, 20236111, 23126984, 40472222, 80944444, 161888888]

約数ペア:

[(1, 161888888), (2, 80944444), (4, 40472222), (7, 23126984), (8, 20236111), (14, 11563492), (28, 5781746), (56, 2890873), (73, 2217656), (146, 1108828), (199, 813512), (292, 554414), (398, 406756), (511, 316808), (584, 277207), (796, 203378), (1022, 158404), (1393, 116216), (1592, 101689), (2044, 79202), (2786, 58108), (4088, 39601), (5572, 29054), (11144, 14527)]